譬如彗星流星此类瞬时变化的现象就只能被认作发生在月球之下的大气现象。
Transient changeable phenomena like comets and meteors could be dealt with simply by assuming that they were atmospheric phenomena, taking place below the sphere of the Moon.
她善于捕捉人物内心世界的瞬时变化，细腻地描绘大自然中的声，色，味道。
She is good at capturing the inner world of instantaneous changes, depicting delicately sound, color and taste of the nature.
模型可以预测发射过程中药室内压力、弹丸运动及工质的分解速率的瞬时变化。
The model predicts the transient variations of gun chamber pressure, projectile motion and the decomposition rate of propellant.
而对于模型中与采集量历史记录无关、反映电压电流瞬时变化关系的元件则用实际元件模拟。
Those components of which values are independent on history record of sampled quantities and reflect the relationship of instantaneous voltage and current are realized by themselves.
对于一定马力的发动机来说，单气缸发动机需要较大的飞轮来保持其瞬时速度的变化。
For an engine of a given horsepower, single cylinder engines require large flywheels to keep the momentary speed variations.
通过讨论瞬时电流的变化规律，提出控制瞬时电流的基本思路。
After studying the law of variation for transient current, the author brings out the basic thought for its control.
如果把瞬时频率作适当的非线性变化，就可以得到一个以地层衰减率的倒数的平均值为输入的频谱。
If a proper non - linear change of the instantaneous frequency is realized, we can get a frequency spectrum whose input is the mean of the reciprocals of bed attenuation coefficients.
常规可控震源都是采用瞬时频率随时间线性变化的扫描信号。
All the conventional vibrators use the sweep signal of which the instantaneous frequency shows linear change with time.
提出了一种异步电机无速度传感器矢量控制的新方法，用瞬时无功功率和励磁电流变化来估计电机转速。
This paper proposes a new method of sensorless vector control for induction motors, in which the motor speed is estimated by both instantaneous reactive power and variation of magnetizing current.
在撞击过程中，动量的变化是突然的，但非瞬时的。
In a crash, momentum changes abruptly but not instantaneously.
通过计算液晶盒中的瞬时指向矢分布，得到光透过率随时间变化与扭曲角之间的关系。
The relation of the transient transmittance and the twist Angle is obtained by calculating the instantaneous distribution of the director in this mode.
一个结点已经迅速地调整到新的环境温度，而另一个结点则变化较慢，这样就产生了瞬时的电压偏置变化。
While one junction will adjust to the new ambient temperature quickly, another changes slowly, resulting in a temporary change in voltage offset.
在讨论这个问题时，又考虑进了排水沟中的水位也是随时间而变化的，因此在地下水流动过程中的任一瞬时，其地下水头差也是一个变量。
In the meantime the time variation of the water level in the ditch has been taken into account, therefore the groundwater head are time-varying as the groundwater flows toward the drain system.
环境粉尘浓度的测定一般使用滤膜称重方法测得，该方法费时费力，且不能得到瞬时粉尘浓度的变化。
Weighing filtration membrane is often used to get the dust concentration of environment. However, this method is discommodious and can not get the instantaneous transformation of dust concentration.
合金的氧化动力学偏离抛物线规律，其瞬时抛物线速率常数随时间而降低，降低幅度大于相应的按抛物线规律变化幅度。
The oxidation kinetics deviates from the parabolic rate law and its instantaneous rate decreases continuously with time more rapidly than required by the parabolic rate law.
结果表明：对钎料熔滴到达焊盘瞬时的接触温度，熔滴初始温度是其主要影响因素，而高度变化对其影响不大。
The results show that the instantaneous temperature of solder droplet when it reached the pad is mainly determined by the initial temperature.
空气运动随空间和瞬时而变化是新鲜环境的要求。
Spatial and temporal variations in the air movement are desirable for fresh environments.
提出了一种基于综合相量幅值和相位变化规律实时测量电力系统振荡中振荡频率及瞬时频率的算法，利用三相电流经相应变换获得综合相量。
An algorithm based on the magnitude and phase Angle of the generalized phasor to measure instantaneous frequency and swing frequency while the power swing occurred is presented.
球壳内作用有流体压力时在瞬时响应模式下位移趋近于零，而孔隙水压力变化相对平缓。
In the case of fluid load the radial displacement in transient response mode tends to zero, and the porewater pressure varies relatively smoothly.
针对铝合金腐蚀平均速率与瞬时速率的差异，根据腐蚀过程中试样横截面的变化与欧姆电阻的对应关系，建立了新的腐蚀速率计算方法。
Based on the relationship between cross section variety and resistance of sample, a new formula was put forward to calculate the instantaneous corrosion rate of aluminum alloy.
以所得宽度函数为基础，考虑水动力参数的空间变化，构建了基于宽度函数的地貌瞬时单位线，用于实际流域的汇流计算，取得了较好的计算结果。
The GIUH based on the width function considering the spatial changes of hydrodynamic parameters is built, by which the results of flood routing of watershed are satisfactory.
考虑瞬时物面变化引起的各种非线性因素，在时域内建立浮体的非线性运动方程并求解。
Considering the nonlinear factors resulting from considering the changing of transient body wetted surface, the nonlinear motion equations are built and solved in time domain.
测量分析小型手摇起动柴油机冷起动过程的瞬时转速、喷油及燃烧过程特征参数在每一循环中的变化情况；
The engine transient speed, fuel injection, combustion process and the cyclic variations in some performance indexes are investigated on a small single cylinder diesel engine during cold-starting.
指出鼓肚变形不仅有瞬时弹性变形，而且还有随时间变化的蠕变变形。
It is pointed out that bulging strain is consisted of not only instaneous elastic strain, but also creep strain which changes with time.
本文结合模型试验，得出了不同温升及变率下表面横向浮射流的瞬时浓度场和流速场，进而分析得出随着温度及变率的变化浓度场的扩散范围、形态特点和趋势。
Based on the model test, the instantaneous concentration and velocity images in different temperatures and scales are put forwarded. And the range, shape and trend of diffusion are acquired.
研究表明，荷载瞬时作用后，地基中有明显的有效应力变化，这是地基产生初始沉降的原因。
From the analysis, it is found that the changing of the effective stress in the ground results in the immediate settlement.
该算法用TCA描述齿面坐标，能自动适应齿轮副任何瞬时转角位置：并在形成整体坐标时考虑了安装条件的变化；
The tooth surface is described by TCA method. The model can be put into any angular position of gear. The change in mounting condition is also considered in the global coordinate.
该算法用TCA描述齿面坐标，能自动适应齿轮副任何瞬时转角位置：并在形成整体坐标时考虑了安装条件的变化；
The tooth surface is described by TCA method. The model can be put into any angular position of gear. The change in mounting condition is also considered in the global coordinate.
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