A down - hole autotracking well pumping unit different from the conventional pumping unit was designed.针对抽油技术的现状和存在的问题,设计了一种不同于有杆抽油方法的井下自动跟踪式抽油装置.It is autumn and they are pumping water out of the swimming pool.入秋了, 他们正在...
On a global scale, AIDS may well become the leading cause of infant death.艾滋病很可能会成为造成全球婴儿死亡的首要原因。...the prejudice and indifference which surround the Aids epidemic.对艾滋病传播的偏见与漠视hysteria over AIDS对艾滋病的严重焦虑He had become inf...
He falls, mortally wounded.他倒下了，伤得很重。Candida admits to having been "mortally embarrassed".坎迪达承认当时“尴尬得要命”。He was mortally offended by your remarks.他对你那番话感到非常生气。Any identifiable reference to him would have been mortally da...
加里东期~印支期区域变质作用与成矿密切相关.The metallogenesis is close related with the Caledonian - Indosinian regional metamorphism.山体岩石为加里东期花岗岩和大理石,距今4——6亿年.Rock Hill Caledonian granite and marble ago 4 - 6 billion years.该区金直接来源于加里东和华力西花岗...