This sensor featuring plane-convex lens collimator for expanding beam and coupling, and a low frequency for light pulse modulation is introduced.
利用平-凸透镜准直器作扩束耦合光学系统，采用低频斩光器实现光调制。
Through the analysis of pile bottom grouting and beam expanding accident methods and principles, the engineering practical examples are summarized.
通过对工程实例的剖析，介绍桩底后注浆和扩大承台(梁)法等桩基事故处理方法和原理，作为工程实践经验的总结。
The conclusion is: a practical beam expanding telescope has maximum beam expanding ratio when its maladjustment is zero.
其结论为一个实用的扩束望远镜在失调量为零时，具有最大的扩束比。
应用推荐