Preconditioned con- jugate gradient algorithm is a fast and accurate computational algorithm.

预条件共轭梯度法是一种精确并且收敛迅速方法。

Paw print, or pugmark, tracing is another common technique for counting tigers.

爪印和老虎足迹同样是常用老虎数量方法。

Based on the experiment of sand and clay,the computing method of buoyance without seepage is analyzed.

通过对砂土和粘土试验,研究无渗流条件下地下结构浮力方法。

The paper discusses the calculation and its property of the rate of combustion heatrelease for prechamber diesel engines.

文章讨论予燃室柴油机燃烧发热规律特点和方法。

It is calculated as half of the value of the sampling rate.Passing this level causes aliasing distortion, or foldover.

它方法是将采样率除以二，超过这个数值将会导致折叠失真，或称折叠。

The frequency domain analysis methods for hydroelasticity of very large floating structures are discussed and reviewed in the paper.

本文对大型浮体水弹性响应频域方法做综述和介绍。

A method is also presented for calculating the side area and volume of critical rocks with arbitrary pentahedron as example.

以任意五面体为例,介绍危石侧面积、积方法。

This paper gives the calculation method for the standard parameters such as internal surface area,volume and quality etc.of toriconical head.

本文给出折边锥形封头内表面积、容积和质量等数方法。

The phase shift theory and transmission line model of inertance tube in the Stirling type pulse tube cooler were introduced.

介绍斯特林型脉管制冷机中惯性管调相原理和惯性管传输线理论模型，给出惯性管尺寸优化方法。

This paper presents how to automatically recognize components in a digital iconological image by labeling connected component and calculate its compactness and centriod.

通过对目连通区域记及紧凑度、重心位置方法来实现数字图像中特征目自动识别功能。

With project instance, this paper introduced the calculation procedure and method about lofting and designing the tunnel stringcourse with sweeping matrix vertical curve.

结合工程实例,介绍大半径竖曲线巷道腰线放样设步骤和方法。

A simple method for calculating the standard heats of formation of organic compounds containing carboxide using the inductive effect index is built up.

利用诱导效应指数建立一个含羰基有机化合物生成热简单方法。

The method of calculating microstepping currents for variable reluctance stepping motor with equal microstep angle was described when motor torque characteristics were sinusoidal shapes.

摘要针对反应式步进电动机正弦转矩特性，介绍等步距角细分电流方法。

Methods Colophony globules were administered to rats by gastrogavage and the gastric emptying rate was calculated by counting the number of colophony globules in stomach.

方法采用胃饲树脂小球并数方法胃排空率,采用高灵敏度感应片传感器记录在体胃在用不同剂量健脾消胀制剂前后运动改变。

The quantum chemical theoretic and experimental studies on the configuration,state of aggregation and carbocyanine molecular structure domino effect of its properties are introduced in this paper.

本文介绍碳菁分子构型、聚集态及碳菁分子性质结构效应量子化学理论与实验研究情况,综述国内外学者对碳菁分子量子化学方法研究进展。

The only way to make a real-time kinoform is to use the liquid crystal spatial light modulator.And the kinoform is valuable to optical information processing and optical measurements.

摘要利用液晶空间光调制器制作相息图是目前惟一一种能实现动态实时全息方法，它在光信息处理和光学测量方面具有重要应用价值。

In this paper, the two calculation methods including M method and finite linear element method (FLEM) of anti-slide pile are improved based on the researches of the predecessors.

摘要本文在前人研究基础上对桩前土体需要开挖抗滑桩提出一种新方法，即似m法。

This paper,by using analysable method of static balance,presents the calculated balance position and balance mass of large bell for blast furnace,so as to improve installational speed and quality.

文章采用静平衡分析方法,给出高炉大钟平衡位置和平衡质量方法,可以有效提高大钟安装速度和质量。

The familiar structures of loose core and ejector of hydrocylinder in injection mold were introduced.The calculating method of selecting hydrocylinder and the key points in using it were discussed.

介绍液压油缸在注塑模具中常见抽芯及顶出结构,并对选取油缸方法和使用要点进行阐述。