The ore-bearing rock is composed mainly of andesitic tuff and tuffite.
作者在赋矿
中首次发现了

气石岩。
凝
岩The ore-bearing rock is composed mainly of andesitic tuff and tuffite.
作者在赋矿
中首次发现了

气石岩。
The main kinds of rocks include carbonate rocks, tuffite, siliceous rocks and quartz sand-stone.
主要岩石
型包括碳酸盐岩、沈积凝
岩、矽质岩和石英砂岩。
声明:以上例句、词性分

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