短语词组短语lifting cord rig 起重设备upper internals lifting rig 上部堆内构件提升机具engine lifting rig 发电机起吊设备vessel head lifting rig 压力容器封头吊具internals lifting rig 堆内构件起吊装置upper core structure lifting rig 堆芯上部构件提升设备 返回 lifting rig