The plagioclase contains albite, oligoclase, andesine, laboratories, bytownite and anorthite.钠长石 、 更长石、中长石 、 拉长石 、 培长石和钙长石属于斜长石大类.The major mineral association in keratophyre rocks from Donggouba area is actinolite + chl...
演奏钢琴的戴夫将这支曲子反复弹了两三遍。Dave, the pianist, played it over a couple of times.牙医可能会决定拔掉那颗牙，以免反复发作。A dentist may decide to extract the tooth to prevent recurrent trouble.露西拉经常要姐姐们把这个故事反复讲给她听。Lucilla often asks her sisters to re...