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汉语拼音：shùn shí sù dù

旧称即时速度”。当时间取得极短(趋近于零)时，位移和时间之比的极限值。是矢量。能确切描述变速运动质点在各时刻或各位置时运动的方向和位置变化的快慢。

瞬时速度 [shùn shí sù dù]

1. 物体在运动轨迹中，某一瞬间的速度叫瞬时速度。

• For an engine of a given horsepower, single cylinder engines require large flywheels to keep the momentary speed variations.

  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。

• In this experiment, the velocity of moving grating is also measured as the tuning fork is forced to micro-vibrate by a transducer.

  测量了音叉在换能器的作用下做微振动时动光栅的瞬时速度。

• he time series of instantaneous velocity in the flows are obtained by the hot-wire technique and data sampling.

  用热线风速仪和数据采样技术得到混合层中瞬时速度时间序列。

• Using integral algorithm to realize the computing of braking speed and braking distance and time.

  利用积分算法，实现了对瞬时速度、制动距离和制动时间的测量。

• velocities at specified points in a flowing stream.

  它能在流动的流注中的指定点上监测瞬时速度。

• So that's the definition of v, instantaneous velocity.

  这些就是v的定义，也就是瞬时速度。

• we can say is the velocity at this instant.

  被我们称之为瞬时速度的物理量

• what you can call the instantaneous velocity of that point

  即为该点处的瞬时速度

• Simulation Model of Optical Encoder and Estimation of Instantaneous Velocity for a Motor

  光电码盘的仿真模型及电机瞬时速度估计方法的研究