mafic component的用法和樣例：
例句
- Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.
黑云母一般是鎂鐵質(zhì)及超鎂鐵質(zhì)巖石中的次要成分。 - Wenquan granite is composed of two end-member rocks, one is the host rock of the acid end-member, and the other is the microgranular mafic enclave.
摘要溫泉花崗巖體由酸性端元的寄主巖石和暗色微細粒鎂鐵質(zhì)包體群及基性巖墻群組成。
