It has rounded shoulders inside instead of the sharp orifice - like edge.
在内部作成圆形凸肩以代替锐缘孔板状的侧面。
It has rounded shoulders inside instead of the sharp orifice-like edge.
在内部作成圆形凸肩以代替锐缘孔板状的侧面。
The bright area of reflex is enclosed by the reflection points of two ends of linear lamp-house at the edge of orifice of lamp and points of intersection with testing screen.
反射光的亮区是由线光源两端点在灯口边缘上的点反射且与测试屏交点所围成的。
The bright area of reflex is enclosed by the reflection points of two ends of linear lamp-house at the edge of orifice of lamp and points of intersection with testing screen.
反射光的亮区是由线光源两端点在灯口边缘上的点反射且与测试屏交点所围成的。
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