例如跟踪雷达天线的风力负载是由一个随时间变化的平均速度成分与迭加的随机阵风组成的。
The wind loading of a tracking radar antenna, for example, results from a mean velocity component that varies with time plus superimposed random gusts.
测绘了切削温度、后刀面磨损量与切削时间或切削速度的关系曲线，分析了刀具前、后刀面显微磨损、破损形貌和化学变化。
Cutting temperature, relation curves of wear with cutting time and cutting speed, microscopic features and chemical changes of rack face and rear face of the tin coated tool were measured.
对照组与低训组各个高度的训练速度相同，只是在训练时间上有所减少，但大鼠在不同高度的生理指标呈现良性的变化。
The control group with low training group all the same high speed training, but the training time was reduced, the rats in various heights and physiological indicators show a positive change.
及在换档时速度的变化。使我们更好的了解汽车在启动，刹车，制动，时速度与时间的变化。
And when shifts gear the speed change which gives us better understanding of automobile in starting, the braking, applying the brake, speed and time changing.
即使速度变化范围很大，顶盖前细胞的放电频率也与速度无关，但却依赖速度在时间上的变化(加速度)。
In a broad range of speeds, the firing rates of these cells depend on the changes of speeds over time (acceleration) but not on speed per se.
计算结果表明，在船体的水平加速度较大时，通道出口冷却剂的温度与流场的变化很大，但持续时间较短。
The result shows that the coolant temperature and velocity fields in the channel vary significantly when the horizontal acceleration is big, but the variation time is short.
该方法通过时频分析获得自混合信号频率随时间的变化，利用激光与外部物体相互作用后的多普勒频移与信号频率相等的关系，非常方便的获得了外部运动物体的速度历史信息。
The frequency of the self-mixing interference signal is acquired by time-frequency analysis, and this frequency is equal to the Doppler shift, so the velocity of external object is gained easily.
这种方法可直接获得向径、轨道速度等参数随时间或极角（绕地心的转动角）的变化，便于分析轨道转移与逃逸运动，有助于飞行使命与运动轨迹的设计。
Radius and orbital velocities can be directly expressed as functions of time or polar angle, which is helpful for designing flight mission and motion trajectory.
这种方法可直接获得向径、轨道速度等参数随时间或极角（绕地心的转动角）的变化，便于分析轨道转移与逃逸运动，有助于飞行使命与运动轨迹的设计。
Radius and orbital velocities can be directly expressed as functions of time or polar angle, which is helpful for designing flight mission and motion trajectory.
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