航天飞机事故，隧道钻探设备，小型设备，起重机，海岸渗漏等等。
The Shuttle accident, tunnel drilling equipment , mining equipment, cranes, leakage at the loading point of an offshore operation etc.
隧道掘进机。盾构机止推钻孔机螺旋钻探机衬里安装设备。安全要求。
Tunnelling machines - shield machines, thrust boring machines, auger boring machines, lining erection equipment - safety requirements.
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