beam angle

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beamanglebeamanglebeamanglebeamangle[英]bi:mˈæŋɡl[美]bimˈæŋɡəl(电磁)波

beam angle
beam angle

beam angle
beam angle [英]bi:m ˈæŋɡl [美]bim ˈæŋɡəl
(电磁)波束宽度
[例句]The ratio of the flux emitted within the solid angle defined by the beam spread , to the bare lamp flux.
由光束角限定的立体角内辐射出的光通量与裸光源光通量之比.