基本解释n.尺烛光同根派生 footcandle相关词英汉例句ONE FOOTCANDLE(FC) EQUALS THE AMOUNT OF LIGHT RECEIVED ON A SURFACE FROM ONE CANDLE ONE FOOT AWAY. 照明单位)勒克斯;测量一平方米上接受的光量.footcandle meter 英尺烛光计footcandle更多例句