关键词：梁体移位；伸缩缝；顶升复位；施工工艺 [gap=193]Key words: beam shifting; expansion joint; jackingreset; construction technology ...
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Laser beam shifting, power stability and intensity distribution symmetry of laser spots are the main parameters affecting collimation accuracy.
激光光束的漂移，功率稳定性和激光光斑的强度分布对称性是影响准直精度的主要参数。
The frequency shifting and beam deflection of the Bragg acoustooptic interaction in cascade is analyzed according to general Bragg acoustooptic interaction theory.
根据声光互作用的一般理论，对不同的声光互作用条件下，级联布喇格声光互作用的频移和光束偏转进行了分析。
The beamforming techniques used in narrowband systems are inadequate for wideband systems because they result in main-beam squinting and null shifting.
窄带系统中使用的波束形成技术对于宽带系统来说是不合适的，因为他们会导致主瓣偏斜和零陷偏移。
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