名词
中文翻译：粒子速度
同义词：
['submicroscopic velocity', 'submicroscopic speed']
例句：
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1. The particlevelocity of the gas is measured by a device called a particle counter.
气体的粒子速度通过一种叫做颗粒计数器的设备进行测量。
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2. In this experiment, we measure the particle velocity of the particles as they move through the air.
在这个实验中，我们测量了粒子在空气中移动时的速度。
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3. The particle velocity in the region around the black hole is extremely high.
黑洞周围的区域粒子速度极高。