The strehl ratio of PCFT beam array with small coherence length and bigger beam order are less affected by turbulence.
相干长度越小、光束阶数越大，部分相干平顶光束序列的斯特列尔比受湍流影响越小。
The major factors that affect the stability of the structure are rotational angle of the voussoir beam, ratio of length and height, rock type and height of carrying rock strata.
块体的回转角、长高比、岩性及负载岩层的高度是影响结构稳定的主要因素。
These parameters include the variety of width-length ratio of the wall, bracing rigidity, thickness of the wall and ratio of beam rigidity.
分析了支撑刚度、墙体高宽比、墙厚及梁柱线刚度比等参数的影响。
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