Another important application of diffraction theory is the study of the far field divergence Angle of a collimated light beam.
衍射理论的另一个重要应用就是研究准直光束的远场发散角。
The portable anti-aircraft missile field training system consists of center control computer, signal commutator, collimated training missile and anti-air commanding lens.
便携式地空导弹野外训练系统模型由中央控制计算机、信号转接器、瞄准训练弹和对空指挥镜组成。
New technique of measuring 3d displacement field of object's surface by multiple overlapping holography to use collimated light beams is investigated.
本文研究用平行光多重全息术分析测量物体表面三维位移场的新技术。
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