英语语法分析

Cool light, Good monochromaticity. High luminous efficacy.

冷光源，单色性好，发光效率高。

Laser has the characteristics of monochromaticity, coherence and a series of excellent.

激光具有单色性，相干性等一系列极好的特性。

Its request for monochromaticity of source is low. The equipments and procedure of this method are simple, but suitable for quarter-wave plates of various wave lengths.

此方法对光源的单色性要求低，新需器材及实验方法简便，并且适于各种波长的四分之一波片。