究竟平衡作用发生在铬铁矿和硅酸盐下沉之前,还是在其后?Did equilibration take place before or after setting of chromite and silicates?在穆斯科克斯杂岩体中,铬铁矿矿层仅产于长石质橄榄岩中.The chromite deposits in the Muskox Complex occur only in feldspathic peridotite.对于铬铁矿矿...
参加轮演剧目的演员an actor in repertory他主要演剧中的鬼魂一角, 但也兼演福廷布拉斯.His main part is the ghost, but he doubles as Fortinbras.我们大家都在为演剧张罗.We have been all alive with acting....