Investigators are also considering the possibility that one of the airplane ' s engines collided with and ingested a large bird or flock of birds , leading to malfunctions 飞机的右引擎自上次大修后已经有9788小时的飞行时间了，而飞机引擎通常飞行10000小时就要大修一次。
Formed by jet engines ' hot exhaust , contrails act as thin cloud barriers that not only reflect sunlight but also prevent the earth ' s heat from escaping into space 凝结尾是飞机引擎向后排出的热气所造成，如同一层薄云屏障，不仅会反射阳光，也会阻止地球的热散失到太空中。
Ever since , things haven ' t been the same at the sprawling industrial giant , which manufactures pratt & whitney aircraft engines , sikorsky helicopters , carrier heating and air - conditioning equipment , and otis elevators and escalators 从那以后，这个躺着的工业巨人开始洗心革面，分组成普拉特和威特尼飞机引擎公司、斯扩斯盖直升飞机公司、凯瑞尔暖气系统和空调设备公司和欧体斯升降机和自动扶梯公司。
Air china s purchase of trent 1000 engines to power its fleet of 15 boeing 787 dreamliners was signed on 13 september 2006 in the presence of the british prime minister tony blair and china s premier wen jiabao during wen s recent working visit to the uk 2006年9月13日，在温家宝对英国进行工作访问期间，劳斯莱斯与国航签署了为15架波音787dreamliner提供trent1000型飞机引擎的供货协议，布莱尔首相和温家宝总理出席了签字仪式。
Abrasive sticks stone are suitable for hand sharpening , super finishing and other purpose , including different shapes and uses stones such as double - layered combination stones , sharpening stones for gum cutters , sticks for honing automobile or airplane engines , super finishing stones for bearing races , special stones , etc 油石可用于手工研磨?磨气缸精磨轴承等，包括多种形状和用途的油石如双面油石，切削橡胶用的研磨油石，汽车或飞机引擎用油石轴承座圈的精磨油石及特种油石等等。
