“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	quasi-hyperbolic space quasi-hyperelliptic curve quasi-hyponormal quasi-ideal quasi-idempotency quasi-identity quasi-informational extension quasi-injective quasi-injective hull quasi-injective hull of a module quasi-injective module quasi-injectivity quasi-integrable function quasi-interior point quasi-interval quasi-invariance quasi invariance of Wiener measure quasi-invariance of Wiener measure quasi-invariant quasi-invariant measure quasi-invariant measure space quasi-inverse quasi-inverse element quasi-inverse functor quasi-inverse matrix

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