The differential refractometer described here was designed on the principle of light refraction at two liquid interfaces.

本示差折光计的设计是基于光线在两液体界面间折射的原理。

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The differential refractometer described here was designed on the principle of light refraction at two liquid interfaces.

本示差折光计的设计是基于光线在两液体界面间折射的原理。

youdao