The speed of moving-target was measured based on the principle of PD frequency shift, and the range of moving-target on the pulse-echo principle.

利用多普勒频移原理实现了运动目标速度测量，利用脉冲回波测距原理实现运动目标距离测量。

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He and his colleagues trained two rhesus monkeys to follow a moving target on a computer screen.

他与同事们训练两只恒河猴注视电脑屏幕上移动的目标。

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Performance always seems to be a moving target as new machines are introduced, faster processors appear, and usage increases.

性能好像是一个移动的目标，因为会引入新的机器、会出现更快的处理器，并且使用量不断增加。

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Risk is a moving target, and not a particularly fast-moving target, in banking today, he said.

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They're already moving beyond early target cities like Beijing and Shanghai into second-tier cities.

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That is the target the much-trailed fiscal measures are supposed to start moving towards.

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