Helicopter Oxygen System什么意思

Heated Oxygen Sensor加热型氧气传感器 Higher-Order Surfaces高次序表面 Human Operator Simulator操作人员仿真器 Hrvatske Obrambene Snage (Croatian Defence Forces)Hrvatske Obrambene Snage(克罗地亚国防军) Holt-Oram Syndrome霍尔特-奥拉姆综合征:家族性心脏和上肢异常症候群 Hours of Service服务小时数 Hosean. 希伯来的先知, 何西阿书 Hostileadj. 怀敌意的, 敌对的 Higher Order Software高级命令软件 Hospitalityn. 好客, 殷勤 Helicopter Oxygen System直升机氧气系统 Higher Order Surface高阶面 Highway Operations System公路作业系统 Holiday Oceanview SamalOceanview Samal度假 Hang Off Sub (oilfield)挂掉子(油田)