“mining engineering plan”的概念、定义、翻译、参考文献-科学参考

单词	mining engineering plan
释义	mining engineering plan Encyclopedia 工学矿山测量图释 mining engineering plan采掘工程平面图反映矿井某开采煤层或开采分层内采掘工程活动和地质特征的综合性图纸。
随便看	principal distribution parameter principal divisor principal dual ideal principal element principal element elimination principal elliptic term principal enumeration principal equation principal escaped point principal factor principal fiber bundle principal fiber space principal fibration principal filter principal focus principal for facet sequence principal form principal formula principal fractional ideal principal fractionary ideal principal function principal function classes principal functor principal fundamental solution principal G bundle

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