| 释义 |
ferriferous 英音 [ feˈrɪfərəs ] 美音 [ feˈrɪfərəs ] 释义 adj. 含铁的,含有三价铁的 例句 1·Carbonate cement is universally more than 10% in sandstones of the upper Yungang formation in Yungang Grottoes area. It's mainly composed of ferriferous calcite and ferriferous dolomite. 云冈石窟地区云冈组上段砂岩中碳酸盐胶结物的含量普遍在10%以上,其主要矿物成分为含铁方解石和含铁白云石。
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