... optical fluid-flow measurement 光学流体流动测量法 optical flux 光通量 optical foam 光学泡沫 ...
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The transmission of the optical system is the ratio of the outgoing light flux and the incident light flux.
透过率是指光学系统的出射光通量与入射光通量的比值。
By improving the optical encapsulation, the luminous flux of LED can be improved greatly.
经过光学封装技术的改善,可以大幅度地提高大功率LED灯串的出光率(光通量)。
The first lens group (G1) receives a light flux entering along a first optical axis (A1).
第一透镜组(G1)取入沿第一光轴(A1)入射的光束。
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