分支
井下作业安全技术/ underground operation safety technology // underground operation safety technology /
井下作业过程中为防止发生意外事故而采取的安全设备、操作方法和防范措施。
井下打捞解卡作业安全/ safety of downhole fishing and releasing stuck operation /safety of downhole fishing and releasing stuck operation
井下作业安全技术井下打捞解卡作业过程中为防止发生意外事故而采取的安全技术和防范措施。