“upcast”的概念、定义、翻译、参考文献-科学参考

单词	upcast
释义	upcast [`ǝp´kast] ^{MINING ENGINEERING} 1. The opening through which the return air ascends and is removed from the mine; the opposite of downcast or intake. 2. An upward current of air passing through a shaft. 3. Material that has been thrown up, as by digging.
随便看	centrilobular emphysema centriole centripetal centripetal acceleration centripetal force centrobaric centroclinal centrode Centrohelida centroid centroid of asymptotes centroids of areas and lines centrolecithal ovum Centrolenidae centromere centromere distance centromere effect Centronellidina centrosome Centrospermae Centrospermales centrosphere centrosymmetry centrum century date

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