. "candela"@en . "The candela is a unit of luminous intensity defined as the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540e12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian."@en . . "The candela is a unit of luminous intensity defined as the luminous intensity, in a given direction, of a source that emits monochromatic radiation of frequency 540e12 hertz and that has a radiant intensity in that direction of 1/683 watt per steradian. The candela is a base unit in the International System of Units." . . "cd" . "\u574E\u5FB7\u62C9"@zh . . "candela"@nl .