standard candle

1. Since the speed of light is constant, knowing how far away such a "standard candle" is ( calculated from its apparent brightness seen from Earth) is to know how long ago it exploded.
   再加上光速是恒定的，知道这样一盏“标准蜡烛”离地球多远（根据地球上观测的视觉亮度计算得出）就能知道它是多久以前爆发的。
2. Supernovae of Type la ( SNe la) are becoming more significant objects, which can be used as a standard candle to measure distances to remote galaxies-and hence to determine the expansion rate of the universe.
   Ia超新星作为测量遥远星系距离（从而测定宇宙膨胀速率）的标准烛光，已经成为具有重要意义的天体。
3. In order to count lactic acid bacteria in living lactic acid bacteria products accurately, we substituted the aerobic culture method adopted in present national standard in China with CO 2 method ( removing oxygen from an airtight container by burning of candle).
   为快速、准确地计数活性乳酸菌制品中的乳酸菌，用CO2烛缸法代替现行国家标准GBT16347&1996活性乳酸菌饮料中乳酸菌微生物检验方法中的有氧培养法。
4. At last, to analyze the errors and validate the system on the standard A lamp, we did some tests for the candle flame temperature distribution, and got good result.
   最后对火焰温度测量系统进行误差分析，并运用近似黑体的标准A光源对测量系统进行标定，建立了一种温度分段线性拟合的方法，通过实际对蜡烛火焰的测温试验，得到良好的测温结果。

noun

1. the basic unit of luminous intensity adopted under the Systeme International d'Unites

   Synonym:    candlecandelacd