·2,447,543篇论文数据，部分数据来源于NoteExpress
If there is still no response, a distress alert will be transmitted on the emergency frequency to the nearest coastguard and nearby shipping.
BBC: Alan Rankin on his yacht Trade Winds
More parts are coming with radio frequency ID (RFID) tags to automatically alert airlines and manufacturers of a problem.
FORBES: Here's Why I'm Grateful Microsoft Doesn't Build Airplanes
应用推荐
模块上移
模块下移
不移动