“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	grazing incidence telescope grazing intensity grazing land grazing livestock improved seed rate grazing management grazing method grazing methods grazing occultation grazing pasture supervisory unit grazing path grazing period grazing permit grazing planning grazing plot grazing pressure grazing prohibition grazing rate grazing resistance grazing return grazing season grazing system grazing tolerance grazing trial grazing unit grazing withdrawal project in China

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