护球
I have the privilege of playing for six great organizations. I want to thank everyone associated with these organizations, the owners, the management, trainers, equipment managers, ball boys, daily security and the list goes on.
我有幸在六支球队中效力,我想感谢冻队中的所有人,老板们、经理们、教练们、设备经理、球童、保安,还有很多人。
The Buffer Damping-vibration Over-loading Security Clutch is a new kind of steel ball security clutch.
缓冲减振重载安全离合器是一种新型的钢球安全离合器。
The bottom ball joint is the key part of deep water riser, and its working state and mechanics behavior are very important to security exercises.
隔水管底部球接头是深水钻井的关键部件,其工作状态及力学行为对安全作业显得格外重要。
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