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...
Some believe this level of compensation is essentially a poison pill to put off any rival bidders.有些人认为这种程度的补偿实质上是阻止任何投标对手的“毒丸”防御。He paid the pill by cashing in some bonds.他把一些证券兑换成现金付账....the contraceptive pill.避孕药丸The ...
他常常派他们出去作调查.He often sent them out to make investigations.你的意见已被记载并将对此作调查.Your complaint has been recorded and will be investigated.这个组织目前正在尼日尔作调查.The group is doing research in Niger....