mean beam length 平均射线长度 ; 长度 ; 平均射线行程
geometric beam length 几何射线长度
beam length regulator 光束范围调节器
beam length adjustment 光束范围调整
effective beam length of flame 火焰有效辐射长度
overall-length-to-beam ratio 船长幅比
Length and Beam 船舶长度和宽度
Calculation results reveal that the equivalent beam length is more suitable to describe the beam size of vortex beam after propagation.
数值计算进一步说明，等效光斑尺寸更适合用来表征涡旋光束传输后的光斑大小。
The parameters considered include the mean beam length of flue gas, the emissivity of gas, the film beat transfer coefficient and the enthalpy of flue gas.
这些参数包括烟气的平均辐射长度、烟气黑度、对流传热系数、烟气的热焓等。
Pointer Length: the distance the beam will project before stopping.
(指针光束长度)：在停止前光束投射的距离。
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