挡光片 meaning in Chinese

light barrier

The equipment of " double light harrier " was developed and applied to measure object ' s velocity , which improved the precision of measuring impacting velocity
作者提出并完成研制的“双挡光片法”测速装置，成功地解决了冲击速度的精确测定问题。
In general , the thesis covers the following aspects : first , in accordance with the property of variable tuning optical attenuator ( voa ) , which is analyzed and discovered through diffraction theory , selected block plate and made attenuator , and achieved satisfactory effect by experiment in light transportation circuit
针对可调型机械挡光衰减器的挡光特点，从衍射理论的角度分析和发现该器件的衰减特征，并根据该特征选择挡光片，制作了衰减器。在传输光路上试用，获得了较好的效果。