standard candle
柯林斯词典
1. N a unit of luminous intensity; the candela: not in scientific usage because of possible confusion with a former unit (international candle) 標準燭光(一種發光強度單位)→see also candela ,international candle
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1. N a unit of luminous intensity; the candela: not in scientific usage because of possible confusion with a former unit (international candle) 標準燭光(一種發光強度單位)→see also candela ,international candle