foot-candle

名词 foot-candle:

1. a unit of illuminance on a surface that is everywhere 1 foot from a point source of 1 candle
   同义词：footcandle

foot-can.dle

n.Abbr. fc,ft-c（名词）缩写 fc,ft-c
A unit of measure of the intensity of light falling on a surface, equal to one lumen per square foot and originally defined with reference to a standardized candle burning at one foot from a given surface.
英尺烛光：用在衡量光照在物体表面强度的单位，相当于每平方英尺一流明，最初是参照一支标准蜡烛在距给定平面一英尺处燃烧而定义的