... photometric scale 光度标 photometric standard 光度标准 photometric parameter 光度参数 ...
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分光光度标准星 spectrophotometric standard
光度标准灯 luminous standard lamp ; photometric standard lamp
国际感光度标准 ISO speed standard
感光度标准 criterion of sensitivity
光度标准器 photometric standard
发光强度标准灯 uminous intensity standard lamp ; [电] luminous intensity standard lamp
光度标准液 Spectro Photometric Std
光度学标准 photometric standard
光谱辐射照度标准灯 [电] spectral radiant illuminance standard lamp
用碱熔法使海带中的碘以i -形式转移到溶液中，然后在酸性条件下用过氧化氢氧化，三氯甲烷萃取，经分光光度标准曲线法测得海带中碘含量大约为426。
I - was obtained from the kelp by alkali fusion, then oxidized by H2O2 in acidic solution, thus we can determine the iodine content by extraction spectrophotometry, which is about 426.
本标准描述了外部锁定型光控器之间的光度控制方法。
This standard describes methods of light level control between an external locking type photocontrol.
原理上，我们可以通过观测所谓的标准烛光(一种天体，它的绝对光度是相同的)来追溯宇宙内的历史。
In principle, one can trace that history back in cosmic time by observing a so-called standard candle, a class of astronomical object whose intrinsic luminosity is uniform.
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