The key point of structure design and accuracy analysis in precision mount which is needed in the procession to obtain second and third harmonics generation is introduced.

介绍了实现倍频和混频过程所需的精密调整架的结构设计要点及其精度分析。

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This "second" article refers to the inheriting section of the "first" one, it firstly introduces six kinds of active measures to reduce harmonics pollution;

本文“二谈”系“一谈”的继篇，首先介绍了减小谐波污染的六类主动措施；

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Approximate analytic expressions of the second, fourth, and sixth harmonics on the strength are presented in concise forms.

得到了二、四、六次谐波幅度与吸收强度的关系的近似解析表达式。

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In particular, the second and third harmonics of the microwave radiation are weaker than expected.

ECONOMIST: The shape of the universe