The police are closing in on the criminals.

警察正逼近那些罪犯。

The enemy is closing in on the city.

敌军正逼近这座城市。

The police car was gaining ground on the robbers.

警车正逼近抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图逼近我的小汽艇。

The mad man came at us with a knife.

那个疯子拿一把刀朝我逼近。

War was impending over the young republic.

战争正逼近这个年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里的罪犯逼近。

The matron bore down upon the terrified nurses.

护士长逼近了那些惊慌的护士。

They all evacuated when the enemy approached the city.

敌人逼近这个城市已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军逼近恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

正逼近的龙卷风使我惊恐万分。

He was faced with imminent death.

面临逼近的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

方选举的逼近，保守党开始显得焦躁不安。

The enemy was upon us.

敌人逼近我。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。狼群的逼近，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好的逼近涡轮发动机，应用成熟的非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几个性质，并由此证得用多项式一致逼近连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程的一类非协调有限元逼近，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪变系统的缺点，提出了一种新的基于局部多项式逼近的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确逼近实际的叶片形状。

The police are closing in on the criminals.

警察正那些罪犯。

The enemy is closing in on the city.

敌军正座城市。

The police car was gaining ground on the robbers.

警车正抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图我们的小汽艇。

The mad man came at us with a knife.

那疯子拿着一把刀朝我们。

War was impending over the young republic.

战争正年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里的罪犯。

The matron bore down upon the terrified nurses.

护士长了那些惊慌的护士们。

They all evacuated when the enemy approached the city.

敌人城市时他们已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军时恐慌蔓延了整城市。

The approaching tornado struck awe in our hearts.

正的龙卷风使我们惊恐万分。

He was faced with imminent death.

他面临的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举的，保守党开始显得焦躁不安。

The enemy was upon us.

敌人我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

场危机对恐鸟来说非常关键。随着狼群的，注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好的涡轮发动机，应用成熟的非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几性质，并由此证得用多项式一致连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程的一类非协调有限元，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，误差较大，些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确地实际的叶片形状。

The police are closing in on the criminals.

警察正逼近那些罪犯。

The enemy is closing in on the city.

敌军正逼近这座城市。

The police car was gaining ground on the robbers.

警车正逼近抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图逼近我们的小汽艇。

The mad man came at us with a knife.

那个疯一把刀朝我们逼近。

War was impending over the young republic.

战争正逼近这个年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里的罪犯逼近。

The matron bore down upon the terrified nurses.

护士长逼近了那些惊慌的护士们。

They all evacuated when the enemy approached the city.

敌人逼近这个城市时他们已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军逼近时恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

正逼近的龙卷风我们惊恐万分。

He was faced with imminent death.

他面临逼近的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随地方选举的逼近，保守党开始显得焦躁不安。

The enemy was upon us.

敌人逼近我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随狼群的逼近，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了热力模型更好的逼近涡轮发机，应用成熟的非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化的几个性质，并由此证得用多项式一致逼近连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程的一类非协调有限元逼近，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式逼近的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确地逼近实际的叶片形状。

The police are closing in on the criminals.

警察正那些罪犯。

The enemy is closing in on the city.

敌军正这座城市。

The police car was gaining ground on the robbers.

警车正抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图我的小汽艇。

The mad man came at us with a knife.

那个疯子拿着一把刀朝我。

War was impending over the young republic.

战争正这个年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察正躲山里的罪犯。

The matron bore down upon the terrified nurses.

护士长了那些惊慌的护士。

They all evacuated when the enemy approached the city.

敌人这个城市时他已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军时恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

正的龙卷风使我惊恐万分。

He was faced with imminent death.

他面临的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举的，保守党开始显得焦躁不安。

The enemy was upon us.

敌人我。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随着狼群的，其注意力开始跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好的涡轮发动机，应用成熟的非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几个性质，并由此证得用多项式一致连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各异性条件下，讨论了双曲型方程的一类非协调有限元，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确地实际的叶片形状。

The police are closing in on the criminals.

警察正逼近那些罪犯。

The enemy is closing in on the city.

敌正逼近这座城市。

The police car was gaining ground on the robbers.

警车正逼近抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图逼近我们的小汽艇。

The mad man came at us with a knife.

那个疯子拿着一把刀朝我们逼近。

War was impending over the young republic.

战争正逼近这个年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里的罪犯逼近。

The matron bore down upon the terrified nurses.

护士长逼近了那些惊慌的护士们。

They all evacuated when the enemy approached the city.

敌人逼近这个城市时们已撤退了。

Consternation spread throughout the city as the invading army approached.

当逼近时恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

正逼近的龙卷风使我们惊恐万分。

He was faced with imminent death.

逼近的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举的逼近，保守党开始显得焦躁不安。

The enemy was upon us.

敌人逼近我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随着狼群的逼近，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好的逼近涡轮发动机，应用成熟的非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几个性质，并由此证得用多项式一致逼近连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程的一类非协调有限元逼近，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式逼近的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确地逼近实际的叶片形状。

The police are closing in on the criminals.

警察正那些罪犯。

The enemy is closing in on the city.

军正这座城市。

The police car was gaining ground on the robbers.

警车正抢劫犯。

The enemy warship tried to bear down on our small airboat.

舰企图我们的小汽艇。

The mad man came at us with a knife.

那个疯子拿着一把刀朝我们。

War was impending over the young republic.

战争正这个年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里的罪犯。

The matron bore down upon the terrified nurses.

护士了那些惊慌的护士们。

They all evacuated when the enemy approached the city.

这个城市时他们已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军时恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

正的龙卷风使我们惊恐万分。

He was faced with imminent death.

他面临的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举的，保守党开始显得焦躁不安。

The enemy was upon us.

我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随着狼群的，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好的涡轮发动机，应用成熟的非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几个性质，并由此证得用多项式一致连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程的一类非协调有限元，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确地实际的叶片形状。

The police are closing in on the criminals.

警察那些罪犯。

The enemy is closing in on the city.

敌军这座城市。

The police car was gaining ground on the robbers.

警车抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图我们的小汽艇。

The mad man came at us with a knife.

那个疯子拿着一把刀朝我们。

War was impending over the young republic.

战争这个年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察向躲山里的罪犯。

The matron bore down upon the terrified nurses.

护士长了那些惊慌的护士们。

They all evacuated when the enemy approached the city.

敌人这个城市时他们已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军时恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

的龙卷风使我们惊恐万分。

He was faced with imminent death.

他面临的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举的，保守党开始显得焦躁不安。

The enemy was upon us.

敌人我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随着狼群的，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好的涡轮发动机，应用成熟的非均匀B样条来拟合部件。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几个质，并由此证得用多项式一致连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异条件下，讨论了双曲型方程的一类非协调有限元，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确地实际的叶片形状。

The police are closing in on the criminals.

警察正逼那些罪犯。

The enemy is closing in on the city.

敌军正逼这座。

The police car was gaining ground on the robbers.

警车正逼抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图逼我们小汽艇。

The mad man came at us with a knife.

那疯子拿着一把刀朝我们逼。

War was impending over the young republic.

战争正逼这年轻共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里罪犯逼。

The matron bore down upon the terrified nurses.

护士长逼了那些惊慌护士们。

They all evacuated when the enemy approached the city.

敌人逼这时他们已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军逼时恐慌蔓延了整。

The approaching tornado struck awe in our hearts.

正逼卷风使我们惊恐万分。

He was faced with imminent death.

他面临逼死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举逼，保守党开始显得焦躁不安。

The enemy was upon us.

敌人逼我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随着狼群逼，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好逼涡轮发动机，应用成熟非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子几性质，并由此证得用多项式一致逼连续函数结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程一类非协调有限元逼，给出了半离散格式下最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统缺点，提出了一种新基于局部多项式逼变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型叶片宜以多段贝氏曲线进行几何模拟，以准确地逼实际叶片形状。

The police are closing in on the criminals.

警察正逼那些罪犯。

The enemy is closing in on the city.

敌军正逼这座城市。

The police car was gaining ground on the robbers.

警车正逼犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图逼我们小汽艇。

The mad man came at us with a knife.

那个疯子拿着一把刀朝我们逼。

War was impending over the young republic.

战争正逼这个年轻共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里罪犯逼。

The matron bore down upon the terrified nurses.

护士长逼了那些惊慌护士们。

They all evacuated when the enemy approached the city.

敌人逼这个城市时他们已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军逼时恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

正逼龙卷风使我们惊恐万分。

He was faced with imminent death.

他面临逼死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举逼，保守党开始显得焦躁不安。

The enemy was upon us.

敌人逼我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随着狼群逼，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好逼涡轮发动机，应用非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子几个性质，并由此证得用多项式一致逼连续函数结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程一类非协调有限元逼，给出了半离散格式下最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统缺点，提出了一种新基于局部多项式逼变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型叶片宜以多段贝氏曲线进行几何模拟，以准确地逼实际叶片形状。

The police are closing in on the criminals.

警察正逼近那些罪犯。

The enemy is closing in on the city.

敌军正逼近这座城市。

The police car was gaining ground on the robbers.

警车正逼近抢劫犯。

The enemy warship tried to bear down on our small airboat.

敌舰企图逼近我们的小汽艇。

The mad man came at us with a knife.

那个疯子拿着一把刀朝我们逼近。

War was impending over the young republic.

战争正逼近这个年轻的共和国。

The police are moving in on the criminals hiding in the hills.

警察正向躲山里的罪犯逼近。

The matron bore down upon the terrified nurses.

护士长逼近了那些惊慌的护士们。

They all evacuated when the enemy approached the city.

敌人逼近这个城市时他们已撤退了。

Consternation spread throughout the city as the invading army approached.

当侵略军逼近时恐慌蔓延了整个城市。

The approaching tornado struck awe in our hearts.

正逼近的龙卷风使我们惊恐万分。

He was faced with imminent death.

他面临逼近的死亡。

With the local elections looming large, the Conservative party is beginning to look nervous.

随着地方选举的逼近，保守党开始显焦躁不安。

The enemy was upon us.

敌人逼近我们。

The crisis is critical for Titanis. As the wolves close in, its attention turns to escape.

这场危机对恐鸟来说非常关键。随着狼群的逼近，其注意力开始转向逃跑。

Non-uniform rational B-splines (NURBS) was used to fit component characteristics of aerothermodynamic model for approaching turbine engine.

摘要为了使气动热力模型更好的逼近涡轮发动机，应成熟的非均匀B样条来拟合部件特性。

Some properties of polynomial mollifier are presented and the conclusion that polynomial can consistently approximate continuous function is proved.

给出多项式软化子的几个性质，并由此多项式一致逼近连续函数的结论。

A class of nonconforming finite elements are applied to hyperbolic equation with semidiscretization on anisotropic meshes, the optimal error estimates are derived.

摘要各向异性条件下，讨论了双曲型方程的一类非协调有限元逼近，给出了半离散格式下的最优误差佑计。

The trackability limitation of current gradient algorithm is discussed.A new algorithm, named variable parameter gradient estimation algorithm with local polynomial approximation is proposed.

本文分析了梯度辨识算法跟踪时变系统的缺点，提出了一种新的基于局部多项式逼近的变参数梯度估计算法。

For the other four leaf shapes - spathulate, denta-spathulate, cello-shaped and deltoid - more segments of Bezier curves were necessary for a good fitting.

对于三角形、匙形、齿匙形、提琴形等四种叶形来说，其误差较大，这些类型的叶片宜以多段的贝氏曲线进行几何模拟，以准确地逼近实际的叶片形状。