In standard reference channel, ITU standard reference creates a comb spectrum with fixed wavelength.

在参考通道，ITU标准参考模块的输出是具有固定波长的梳状光谱。

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Analytical procedures used to Draft — Not for Implementation characterize a reference standard should not rely solely on comparison testing to a previously designated reference standard.

用于标准品界定的分析方法不应仅仅是和先前的指定标准品进行比较实验。

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As and ar in the formula are peak area or peak height of internal standard substance and reference substance, Cs and CR are density of internal standard substance and reference substance separately.

式中as和AR分别为内标物质和对照品的峰面积或峰高，Cs和CR分别为内标物质和对照品的浓度。

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So, you assign values to very specific states of matter and call those the reference points for your temperature. For instance, freezing of water or boiling of water, the standard ones.

那么你对物质的,某些特殊状态指定数值,把它们叫做你的温度的参考点,比如水的冰点或沸点,它们都是标准。

麻省理工公开课 - 热力学与动力学课程节选

This is the global surface temperature departure from the 1961-1990 average, also from the CRU at East Anglia. (Despite all the climategate hubbub, this is still the reference standard in the business).

FORBES: Global Warming Flatliners

With its programmatic approach, based on a listing system and the use of revisable operational guidelines for its implementation, the 1972 Convention strengthened heritage conservation policies, and became the standard reference for including conservation policies as a means of development, largely through tourism.

UNESCO: Intangible Cultural Heritage

But more than that, Hopkins's father was the author of A Handbook of Average and A Manual of Marine Insurance, both standard reference books for negotiating, averaging, and adjusting the liabilities to insurance underwriters of cargo losses and shipwrecks, so Hopkins grew up in a world wet with marine accidents and was especially attentive to them.

NPR: Excerpt: 'Exiles'