American National Standard for 2 in. (51 mm) Integral-Reflector Lamps with Front Covers and GU5.3 or GX5.3 Bases
美国国家标准为2英寸 (51 mm)带前盖和GU5的整体反射灯 3或GX5 三垒
ANSI C78.24-2001 sets forth the physical and electrical characteristics of the group of incandescent lamps that have 2 in. (51 mm) integral-reflector lamps with front cover.