Optical-electro sensor detect, pause during bottle missing or jam, auto operating after re-set.
光电传感器检测，缺瓶或堵瓶暂停作业，恢复后自动运行。
The propagation properties of the bottle beam were described based on geometrical optical theory, interferential theory and diffraction theory.
分析几何光学理论、干涉理论和衍射理论对局域空心光束传输特性的描述。
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