扫频激光光源提供了足量的光照强度，可以轻松测取低api度原油的参数。
The swept source laser provides light intensity strong enough to easily measure even the lowest API gravity crudes.
光源基座与光源保护窗之间设置有低摩擦系数的材料，提供光源模组光滑滑行的功能。
Between the light the light source seat and the protecting window, is set low friction coefficient material to make light source assembly slide smoothly.
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