The aircraft electric power source system is an important part of the on board equipments, which will affect the normal and secure flight of the airplane.
航空电源系统是机上设备的重要组成部分，任意一个环节出现故障，将会影响整个飞机系统的正常安全运行。
He stated forthrightly and somberly: "Tonight we have lost trace of an Air France airplane with 228 people on board, passengers and crew."
他语调阴沉而直接地陈述道：“今晚我们法国航空公司的一架带有228名乘客和机组人员的飞机失踪了。
Not long ago, an airplane was flying over New Zealand. There was a television camera crew on board.
不久前，一架飞机飞过新西兰上空，机上有一个电视摄像组。
Not long ago, an airplane was flying over New Zealand. There was a television camera crew on board.
不久前，一架飞机飞过新西兰上空，机上有一个电视摄像组。
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