Since the time when human beings were born on this earth, change has been a constant factor in life.
自人类在地球上诞生，变化更替一直是生命中不变的因素。
Needing money seems to be a universal and constant factor and thus cannot explain the increasing labor force participation of women.
对钱的需要是一个世界性的持续的因素，因此不能解释妇女在劳动力参与比例的增长。
It is impossible to do a counterfactual analysis-to hold one factor constant and see the effects on the rest of the economy.
想做一个反事实推论分析(控制一个因素为常量，观察其对其他经济产生的影响的一种分析方法)几乎是不可能的。
n It takes discrete values, multiples of some integer n, and the multiplication factor is the ratio of the Planck constant divided by 2 pi where n takes one, two, three and so on.
这些离散的值乘以整数，乘积因子,是普朗克常数除以2π,其中n可以取1，2，3，等等。
And I am going to call this whole geometric factor here, I am going to put it into one number, and I am going to denote that the Madelung constant.
接下来我将会称这一部分为几何因子，我将把它们整合在一个数字里，我将会标注它为马德隆常数。
This is the Rybczynski theorem: in a two-good world, the growth of one factor of production actually cuts the output of one good if prices are constant.
这就是罗勃津斯基原理：在两种商品的世界中，如果价格固定不变，一种生产要素的增长实际上会减少一种商品的产量。
At present, contributions to hyperon polarization derived from hadron decay have been argued, but in this argument decay polarization transfer factor is assumed as a constant usually.
目前已有文献讨论过强子衰变过程对超子极化的影响，但这些文献中通常将衰变过程的极化转移因子取为一个常数。
In this paper, the scale factor and universal constant are discussed for asymmetric unimodal mapping.
本文对非对称单峰映射的标度因子和普适常数进行了研究。
Moreover, the expansion ratio of scale factor and the variation ratio of string coupling constant are calculated.
另外，计算了标度因子的膨胀比和弦耦合常数的变化比。
Uses the constant market share model to analyze the influence factor of Chinese vegetables to Japan in the article.
本文以日本作为研究对象采用恒定市场份额模型分析中国蔬菜出口日本增长的影响因素。
The open loop time constant of the main generator influence the overshooting evidently. The important factor is the rising speed of the output DC voltage.
主发电机的开环时间常数会对建压过冲产生影响，而输出直流电压的上升速度也是一个重要因素。
This switching offers practically constant brain training which may be a factor in helping stroke patients recover.
这种转换提供了几乎连续不断的大脑训练，这可能是帮助中风患者恢复的一个因素。
Calculation method of characteristic parameters for pure substance, such as critical constant, centric factor, and constants of potential energy are put forward.
介绍纯物质特性参数包括临界常数、偏心因子和势能常数的计算方法。
The important parameters for the wave absorption effects are electromagnetic loss factor, complex dielectric constant, complex magnetic conductivity.
评价吸波效能的主要参数是损耗因子、复介电常数、复磁导率。
The three-phase PWM voltage source rectifier presented in this paper owns such features as constant output voltage, running under unit power factor and feedback of the power into the power networks.
三相电压型PWM整流器具有输出电压恒定、能实现单位功率因数运行的特点，甚至可以实现电能回馈电网。
In the unit kinetic parameters for the reaction rate constant, the frequency factor and the apparent activation energy etc.
测定了反应速率常数、频率因子、活化能等动力学参数。
The reactive power compensation principle and method of constant power factor control are studied theoretically . and experimentally.
然后阐述了可控电抗器恒功率因数控制的无功补偿原理和实现方法，并进行了无功补偿实验。
The solubility, dielectric constant, and dissipation factor of the polymer were improved alter acetyl substitution of poly (p-xylylene).
与聚对苯撑二甲基聚合物相比引入乙酰基后聚合物的溶解性、介电常数和损耗因子均有所提高。
Constant power factor PR-VR curve and critical constant power PR.
恒功率因数负荷pr -VR曲线和临界恒功率负荷pr。
PWM rectifiers have the characteristics of large power factor, bidirectional power flow and constant direct voltage.
PWM整流器具有功率因数高、能量可双向流动、直流电压恒定等优点。
According to this relationship, vector control system with energy-saving based on constant power factor was formed.
通过此关系，设计了基于恒功率因数的节能型异步电动机矢量控制系统。
The material selection and structural design of the thermocouple sensor and the routine test conditions, especially the recovery factor and time constant experiment are introduced.
介绍了热电偶传感器材料的选择和结构的设计以及传感器的例行实验情况，特别是恢复系数和时间常数实验。
Constant cravers feel hungry most of the time. Scientists believe this factor could indicate a person has more of the genes that tend to make you feel hungrier.
吃不饱型暴食者总是觉得饿。科学家认为这是因为这种人带有更多让人感觉饥饿的基因。
Elements that affect the output power factor Angle are analyzed, the basic principle of constant power factor Angle control is studied and its realization scheme is presented.
分析了影响功率因数角的因素，研究了定角控制的基本原理，给出了定角控制方法的实现方案。
The dielectric constant, pyroelectric coefficient, thickness extension vibration electromechanical coupling factor and their temperature dependence are investigated.
研究了它们的介电常数，热电系数，厚度伸缩振动机电耦合系数及其温度依赖性。
The person's body lies in the condition of constant change, follow the age not only, still can produce change along with the other factor such as season.
人的身体处在不断变化的状态中，不仅随年龄，还会随季节等其他因素发生变化。
The demand for new knowledge and skills will be constant, no longer a value added element, but the essential factor in determining organizational survival.
对新知识和新技术的需求将成为一种常态，而不再是一种增值的因子，这种需求将成为组织生存不可或缺的要素。
At first, just considering on the temperature factor, that is, keep the belt speeds constant and just change the temperature.
首先只考虑温度因素，即网带速度不变，只改变温度。
There are three usual methods for excitation control following constant excitation current, constant power factor, and constant setting open-loop control.
常用的励磁控制方法主要有三种：恒励磁电流、恒功率因数、恒给定开环控制。
There are three usual methods for excitation control following constant excitation current, constant power factor, and constant setting open-loop control.
常用的励磁控制方法主要有三种：恒励磁电流、恒功率因数、恒给定开环控制。
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