Biotite is a subordinate constituent of the mafic and ultramafic rocks generally.黑云母一般是镁铁质及超镁铁质岩石中的次要成分.Late Precambrian mafic dyke swarms are extensively developed in the central North China Craton.华北克拉通中部广泛发育晚前寒武纪镁铁质岩墙...
A referendum would be divisive.公投将产生分歧。Abortion has always been a divisive issue.人工流产一直是个引发争议的问题。All this can lead to divisive family arguments to which guilt is a major contributor.所有这些都能导致家庭意见不和，而内疚是其中的主要因素。...