“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	regular hyperboloid regular hypercomplex function regular icosahedron regular icosahedron group regular ideal regular ideal boundary regular identity regular imbedding regular immersion regular initial number regular inspection of dam safety regular inspection of inventory control system regular integral regular integral curve regular integral element regular integral manifold regular interior point regular interpolation matrix regular interpretation regular isotopy regular isotopy invariant regularity regularity almost everywhere regularity at infinity regularity axiom

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