He was not good at algebra in middle school.

他中学时不擅长代数。

Four years after he graduated from school, Tom decided to dust off his algebra book.

汤姆从学校毕业四年后, 决意重温代数。

In algebra, the sign X usually denotes an unknown quantity.

在代数里, 符号X常用来表示未知数。

His classmates were labouring with elementary algebra.

他同学们正在绞尽脑汁地演算初等代数题。

As its application, a multi-component system similar to the BPT hierarchy is obtained.

最后利用外积性质构造了一个3 维loop代数 ,由此可设计出许多新等谱问题，作为应用，本文得到了一个多分量Boite-Pempinelli-Tu(BPT)族。

If you want to be a draftsman, a machinist, a molder, or a patternmaker, you'll need algebra and geometry and even trigonometry.

如果你想为手艺人、缝纫、造制模，你需要代数和几何，甚至三角学。

Using the notion of coefficient matrix and maximal element.We prove that the Lie algebra is semi-simple and it has no abelian two dimensional subalgebra.

利用系数矩阵和极大项，证明了这李代数是半单李代数且没有二维交换子代数。

Further more,we prove that the cohomotopy groups is isomorphic to K1 -group of the continuous algebra on topological boundary of bounded domains in C.

在复平面C中，任意有界域拓扑边界上连续函数代数K_1-群与其边界上上同伦群同构。

The large deflection problem of cantilever beams was studied by means of the biparametric perturbation method and the first order derivative substitution from pseudolinear analysis approach.

利用拟线性分析方法中一阶导数代换对基本方程进行了简化处理,将基本微分积分方程转化为非线性代数方程组,并结合双参数摄动研究了悬臂梁大挠度问题。

A hypercomplex model of acoustic vector sensor array is introduced.The hypercomplex number is used to model holistically the four output signal components of an acoustic vector sensor.

摘要将超复数代数引入矢量水听器信号处理领域，用超复数来整体表示了矢量水听器输出4个信号分量，并建立了矢量水听器阵列超复数模。

In this paper, we proved that the definition of a semilattice as a universal algebra and the definition of a semilattice as a partial ordered set are equivalent.

本文中，我们证明了作为泛代数半格定义与作为偏序集半格定义是等价。

With the request of geometry modeling system and application of the concept about complexes algebraictopology in the field of industrial production , the theory of non-manifold model come into being.

业产品几何造技术发展要求,以及代数拓扑学复形等概念引入到几何造中,因此产生了非流形几何造理论。

In this paper, the conclusion is that the intersection of lie subring of a Lie group is a Lie subring is obtained, moreover,it gives the Lie algebra of the Lie subring.

文章通过李子群性质得出了李群两个李子群交依然是李子群结论,进而得出这一李子群李代数形式。