查询词典 unit mass

A British unit of force equal to the weight of a standard one-pound mass where the local acceleration of gravity is 9.817 meters (32.174 feet) per second per second.

一磅力：英国所采用的力的单位，相当于在重力加速度为9.817米/秒（即32.174英尺/秒）的地区的一标准磅东西的重量

Part 2 : determination of mass per unit area of anodic oxidation coatings.

第2部分：阳极氧化物镀膜单位面积质量的测定。

In fact, the arithmetic is not set up this way, the quality of nuclear helium than two protons and two neutrons, and the quality of fewer 0.0302 atomic mass unit [57]!

实际上，这样的算术并不成立，氦核的质量比2个质子、2个中子质量之和少了0.0302原子质量单位[57]！

From c. 1900 until 1961, the reference standard was oxygen, with a value of 16, and the unit of atomic mass was defined as 1/16 the mass of an oxygen atom.

大约从1900～1961年，氧曾作为原子量的参考标准，那时指定氧的原子量为16，因而原子质量单位定义为氧原子质量的1/16。

The property of SEBS was affected by relative molecular mass, mass ratio of styrene to butadiene, content of 1,2 unit and degree of hydrogenation.

研究了聚合物相对分子质量、苯乙烯与丁二烯的质量比、SBS的PB嵌段中1，2-结构质量分数和氮化度对SEBS性能的影响。

And then taking the whole fuel cell unit as a subject, builds up the PEMFC unit empirical model, combining certain thermodynamic theory as mass transfer, diathermancy, etc.

然后以整个燃料电池单池为研究对象，结合一定的传质、传热等热力学原理建立了PEM燃料电池单池的经验模型。

Studied present measuring methods" advantages and disadvantages, and presented the necessity and importance of researching propellant transient heat transfer.2.according to 130 and aeronautic 90 rocket projectiles" structure, analysed and acquired physical and mathematical models for propellant transient heat transfer, also designed propellant temperature field simulation units for test.3.acquired discrete transient heat balance equation and temperature calculation program, and gave contrasting curves between experimental temperature values and program calculating temperature values as well as maximum errors and average square root errors between them.4.by programs based on the first class boundary condition, worked out temperature distribution in propellant temperature field simulation units at different time, analysed temperature field distribution law and main elements affecting heat transfer, acquired propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.5.established transient heat transfer mathematical model and temperature calculation program for the third class boundary condition, drew contrasting curves between temperature experimental values and calculation values and gave maximum errors and average square root errors between them, got temperature distribution in the simulation unit at different time and main elements affecting heat conduction, figured out propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.

分析了现有测试方法的优缺点，提出了研究推进剂瞬态导热的必要性和重要性。 2。根据130和航90两种火箭弹的结构，分析得到了推进剂传热的物理模型和数学模型，设计了推进剂温度场模拟实验装置。 3。得到了离散形式的瞬态热平衡方程和温度场计算程序，给出了实验温度与程序计算温度值的对比曲线及其最大偏差与均方差。 4。利用程序求出了第一类边界条件下、不同时刻推进剂温度场模拟装置中的温度分布，分析了温度场的分布规律和影响传热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处的温度时间曲线并给出了两者之间的最大偏差与均方差。 5。建立了第三类边界条件下的瞬态导热数学模型和温度计算程序，求出了温度实测值与计算值的对比曲线并给出了两者之间的最大偏差与均方差，得到了不同时刻温度场模拟装置的温度分布与影响导热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处温度及两者之间的最大偏差与均方差，讨论并确定了能代表130和航90推进剂温度的特征点的位置。

The natural relationship of Gravitational Constant is also concluded:, In which from definition of must basic unit of current intensityor coulomb in classical physics, the measuring principle of unit charge and the gas kinetics are combined, and the formula of relative theory of mass is used, by the use of the methods of logical inference with concludiung synthesis.

运用逻辑推理和归纳综合相结合的方法，从经典物理学的源头--电流强度单位的定义和电量单位的定义出发，结合元电荷测定原理、气体分子动理论以及相对论质量公式，导出了万有引力常量G的关系式：，解释了G的测量值的大小、变化及其范围，消减了一个物理基本常数。

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。

The distribution of mass sports activity is at the street area and the business,institution unit,park,square,the members of each kind mass sports activity sites have characteristic at gender,age and occupation .

厦门市各区群众体育健身活动点主要活动内容体现出共性基础上的差异性特征，群众体育活动点多分布在街区公用场所和企事业单位、公园、广场，各类群众体育健身活动点成员有其明显的性别、年龄、职业特征

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。