“second moment method”的概念、定义、翻译、参考文献-科学参考

单词	second moment method
释义	second moment method Encyclopedia 工学激光参数测量方法释 second moment method二阶矩法利用激光束宽正比于光束横截面上功率密度分布的二阶中心矩这一原理定义、测量光束束宽的方法。
随便看	particle-hole interaction particle-hole theory particle horizon particle identification particle identification technique particle image velocimetry particle image velocimetry，PIV particle in a box particle-in-cell method particle in cell simulation particle-in-cell simulation particle induced X-ray emission particle-induced X-ray emission fluorescence analysis particle induced X-ray emission, PIXE particle in spherically symmetric potential particle interaction particle lifetime particle line particle mass spectrometry particle mean diameter particle mean free path particle measurement particle megnitic moment particle-mesh algorithm Particle Mesh code

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