词汇	hold keelson
释义	hold keelson 🌏舱内龙骨；底舱内内龙骨
随便看	operations control center operations control group operations controller card operations control plan Operations Control Procedure Operations Control System operations control team Operations Coordinating Board Operations Coordination Board operations count operation screen operations department Operations Department-Duty Structure operations determination Operations Development Branch operations directive Operations Directive Handbook operations director Operations Directorate Station OPERATIONS DIVISION operations documentation operations duty officer Operation Sealion Operation Sea Lion Operation Search and Rescue