The harm of percussive ground pressure,produced reason,conditions and protective measures are introduced.
The harm of percussive ground pressure,produced reason,conditions and protective measures are introduced.
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.
介绍了冲击地压的危害程度，发生的原因、条件及采取的防治措施。