mass point

Meanwhile, the structure of 3-( 2'-carboxyethyl) benzo [ b] thiophene was confirmed by testing melt point, NMR, Mass Spectrometry and elementary analysis.

并经熔点测定，1H-NMR、13C-NMR、质谱及元素分析，表征其合成得到的3（2′羧乙基）苯并噻吩的结构。

A Study of Three Point Add Mass Method for Single Plane Field Balance

单面现场动平衡解析三点加重法试验研究

The method of energy-state is used to simplify the dimension of the traditional point-mass motion model, and the theory of optimal control is used for the trajectory optimization. The global optimization has been achieved with a genetic algorithm program in Matlab.

用能量状态概念简化飞机运动模型，应用最优控制理论进行飞机飞行性能的优化，使用遗传算法进行全局寻优，继而生成最优节油飞行轨迹，并通过Matlab程序进行仿真。

Points out this concepts does not detached from the mass category and analyses the reasons of the audience segmentation from the theory of social stratification and formation point of view.

指出了分众化并没有脱离大众化的范畴，它是与大众化相对应的概念。并从社会分层的理论角度分析了分众化的形成原因。

Thirdly, the trajectory model of the mass point is built and a wavy trajectory is designed& optimized;

第三部分，建立了导弹质点弹道模型，设计了一条跳跃式弹道，并对跳跃式弹道进行了优化设计；

Vapor pressure and boiling point depends on molecular mass and the type of intermolecular forces.

蒸汽压及沸点取决于分子量及分子间作用力的类型.

The design methods are introduced for the mass concrete basement, protection of concrete in the saline-alkali soil, aseismic measure, overbridge, point-supporting glass curtain wall.

介绍了结构设计中的大体积地下室设计、盐碱地混凝土防护设计、抗震设计、天桥设计和大型点式幕墙设计。

At last, from the practical point of view, this thesis made recommendations of a certain reference seeking to promote the realization of the mass media in order to raise the level of health communication function.

最后本文从新闻实务的角度提出了建议，力图为大众媒体实现健康传播功能时提高水平而有一定借鉴作用。

The key and the hot and difficult point of the research of MC are how to deal with the contradiction between mass production efficiency and customer's personal customized demand rationally, and at present, the core ideas of solving this problem are developing rove around the Postponement.

大规模定制模式研究的关键问题及其热点和难点在于如何合理处理规模生产效应同客户个性化定制需求之间的矛盾问题，目前对这一问题的处理方法是以延迟策略（Postponement）为核心思路展开。

The Simulation of Mass Point Lengthways Trajectory Based MATLAB/ Simulink

基于MATLAB/Simulink的纵向质点外弹道仿真

And the other thing to point out, which I don't know if this is true or not, but does anyone know& well that's part's true, does anyone know what the atomic mass of lithium is?

另外需要指出的一点是，关于这点我不知道是不是真的，有人知道&这部分是真的，有人知道锂的原子量吗？

Using Tangential Force Method to Detect the Singular Points and to Discriminate Their Stability Conditions of a Movable Mass Point on any Guide Curve Rotating about a Vertical Axis without Friction

用切向力法寻求绕铅垂轴旋转导轨上滑动质点的奇异点及其稳条件

Excessively skinny models have been a point of controversy for decades, and two researchers say a model's body mass should be a workplace health and safety issue.

几十年来过瘦模特一直是争论的焦点，两个研究人员称模特的体重应该是职业健康的安全问题。