第三谐波发生

摘要叙述了大口径高功率固体激光器，利用两块级联晶体的二阶非线性效应，对激光输出进行谐波转换，实现三次谐波输出的方法。

third molar, wisdom tooth; 又称“第三磨牙、智牙”。

third-party

μ3，third central moment central moment

third-generation mobile; 3G mobile

mendel's third law

third ventricle

auditor's liability to third-party beneficiary【审计】

third stage of labour ( labour )