“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	African Petroleum Producers' Association African Police Cooperation Organization African Political Systems African Postal Union African Religions African rock-paintings African savanna elephant African Scientific Socialism African Studies Association African Studies Program of University of Iowa African swine fever，ASF African Theory of Transsending the Capitalist Stage African Timber Organization African Times African traditional carving African trypanosome African trypanosomiasis African Union African Union of Broadcasting African whitefly African Women’s Day African Worlds Institute Africa Rice Center Africa's First Francophone Radio Station Afrikaans

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