查询词典 Mass

The energy equivalent to the mass of a particle at rest in an inertial frame of reference; equal to the rest mass times the square of the speed of light.

在一个惯性坐标系中与物体静止质量相当的能量；等于静止质量乘以光速的平方。

The WEP states bodies of different structure and compositions have the same ratio of gravitational mass to the inertial mass in uniform gravitational field.

弱等效原理是爱因斯坦广义相对论的基本假设之一，它指出"在均匀引力场中，不同组份物体的惯性质量和引力质量之比相等"。

Newton precisely measured the inertial mass of a great many objects (what it took to get them moving, as in getting a pendulum started) and their gravitational mass (how fast they fell to the Earth), to determine that the two forces were equal, if not equivalent, and could be canceled out when doing physics.

牛顿精确测量了很多物体的惯性质量（使物体运动的内在动力，就像钟摆开始往复的动力）和它们的引力质量（以多快的速度向地表坠落），以此来确定这两种力是均等的，如果不均等，在做物理学运算时可能就会互相抵消。

Now there are two models regarding the massive starformation: infall and accretion model as does the low-mass star formation, andthe collision or merging of low- or intermediate-mass stars model.

对于大质量星形成过程目前主要有两个观点：类似于小质量星形成的吸积方式和由中、小质量原恒星并和形成方式。

The input and output unit is in charge of the input, output and distribution of the streams. While the mass/heat exchanging network unit defines the mass/heat exchanging connection, which can be described as operator for process integration.

输入输出单元中确定了流股的分配关系和输入输出关系；质量交换网络单元和换热网络单元确定了质/热交换过程，它们可以看成是集成算子，针对不同的集成规则可以建立不同的算子。

ResultsThe ultrasonic indicators, such as interventricular septum thickness, left ventricular posterior wall thickness, left ventricular mass and left ventricular mass index were statistically different between the two groups.

结果OSAHS组与正常对照组比较室间隔厚度，左室后壁厚度，左室质量及质量指数等主要反映心脏结构的超声指标比较差异均有统计学意义。

While the Judica, introit, and the Gloria in Excelsis have been added to this first part of the Mass and the long series of prayers omitted from it, the oldest order of the Synaxis, or meeting without Mass, has been retained in the Good Friday service.

而judica ， introit ，凯莱在excelsis已加入在这第一部分的群众性和长期性的一系列祈祷遗漏的，历史最悠久的有序的synaxis ，或集会的群众，一直保留在良好周五服务。

Simultaneously, when the volume fractions of coexisting three-liquid-phases are converted into mass densities, it is also found that the coexisting curve of temperatures versus mass densities of phases is also standard inverse "S" type curve.

实验结果表明，在平衡共存三液相中，水、环己烷和二乙二醇丁醚的体积分数随温度改变的变化曲线分别是倒"S"型，正"S"型，"结"型；将共存三液相的体积分数转化为对应的相密度后，相密度随温度改变的变化曲线也是规整的倒"S"型；而且，3条"S"曲线形状均表现出不对称的特性。

The mass spectra were recorded on a Finnigan Matt 8430 mass spectrometer operating at an ionization potential of 70 eV.

H和13C核磁共振谱在299.94和75.43兆赫分别录得，使用Varian 300兆赫仪器以CDC13作为溶剂和MeSi

Using the Mindlin theory, the four-node finite element shell modal of healthy and damaged structure is formed; Using Green Function theory, the fluid around the structure is considered to be inviscid, irrotational and incompressible, and then the effect of fluid to structure is translated to the added mass matrix compared with global mass matrix using BEM.

基于Mindlin理论，本文建立了描述健康和损伤的四结点有限元板壳单元模型；基于Green函数理论，将结构所处的流体环境考虑为无粘、无旋、不可压缩的理想流体，推导了三维问题拉普拉斯方程的基本解，并利用边界元方法将流体对结构的影响归结为对结构整体质量矩阵的影响；针对各向同性损伤单元，采取刚度各向整体弱化的方法分析；对于各向异性损伤单元，采用Kachanov理论，引入了x和y两个方向的弹性损伤折减系数。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐