介绍了冲击地压的危害程度, 发生的原因 、 条件及采取的防治措施.The harm of percussive ground pressure, produced reason, conditions and protective measures are introduced.介绍了煤矿发生冲击地压的显现特征.This paper introduces the characteristics of impact earth press...
He whined and pouted when he did not get what he wanted.他要是没得到想要的东西就会发牢骚、撅嘴。"Why can't you tell me?" I whined.“为什么你不能告诉我？”我嘀咕道。The dog whined at the door, asking to be let out.狗在门前嚎叫着要出去.The engines whined.发动机呜呜作响。W...
大陆地壳最古老的部分有40亿年历史。The most ancient parts of the continental crust are 4000 million years old.在地壳深处,温度如此之高,可能足以将岩石熔化.Deep in the earth's crust the rock may be subjected to temperatures high enough to melt it.地层学研究地壳中...