During the cutting operation, the photoelectrictube control is adopted with the most safe operation.
裁断作业时采用光电管控制，操作最安全。
2
When the two-tubephotoelectric door is applied to the law of conservation of momentum. the satisfied results are obtained.
将双管光电门应用于动量守恒定律，得到了较满意的效果。
3
As ICCD device costs high, based on analysis of existing photoelectric detector, we choose photomultiplier tube as a substitute for the principle verification experiment.