A speed detector (58) detects a transport speed of the film.
速度检测器(58)检测膜的输送速度。
The paper introduces a travel speed detector for hoist based on the infrared laser position transducer.
本文介绍一种基于红外激光位置传感器的提升机运行速度检测装置。
However, as they passed a speed trap, he got nailed with an infrared speed detector and was pulled over.
不过，这些车子经过测速器时，他被红外线测速器抓到，警察命令他停车。
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