比较光度计

relative photometer的用法和样例:

例句

  1. We must carry out the measuremnt with a photometer on an airplane.要进行这种测量,我们必须使用一台装在飞机上的光度计。
  2. Photometer for measuring the directional light distribution characteristics of sources or luminaires.测量光源或灯具定向光线分布特性的光度计。

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air bubble resorber
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aonb
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xenon hexafluoride
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