A structure of the switch is given, which has an ideal extinction ratio and is characterized by its easy alignment and no strict confinement of the length along Z-axis.
介绍了这类开关的一种结构，它有理想的消光比，并具有校准方便，对沿Z轴长度无严格限制等特点。
It can't have been easy, given the instruments at hand in 2700bc, and getting the angles and the alignment correct involved unbelievable precision.
在公元前2700年用已有的工具达到每一个角度和对较的精度并非易事。
The Laser Micro-gage 2D brings measuring and alignment versatility to industry in a simple, easy to use and affordable package.
进口工业网的激光微量规是一款工业级别的测量和校准设备，结构简单，使用简便。
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