spherical xenon lamp 球形氙灯
spherical dysprosium holmium lamp 球形镝钬灯
spherical mercury xenon lamp 球形汞氙灯
Spherical ceiling lamp 圆球吸顶灯
Mean Spherical Candle Power is a measure of total lamp photometric output.
球状烛光是所有灯的光度输出的度量标准。
Small holes are arranged on the spherical reflecting mirror and the crossing portion of the spherical reflecting mirror and the long shaft of the ellipse, and the small holes are lamp holes.
在上述球面反射镜上，在其和椭圆的长 轴相交处开一小孔，即为灯口。
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