神马作文网英语翻译The higher a plane flies,the colder the temperature of t
来源：学生作业帮 编辑：神马作文网作业帮 分类：英语作业 时间：2024/11/23 23:47:43
英语翻译
The higher a plane flies,the colder the temperature of the air around it.At 35,000 feet and above,the outside air is around minus 70 degrees Fahrenheit(minus 50 degrees Celsius) far,far colder than an icebox.
As an aircraft climbs,atmospheric pressure falls too,from about 15
pounds per square inch at sea level to around four pounds per square inch at airliner cruising height,which may be 10.000 feet above the highest altitude that will sustain human life.Cabin pressure is usually allowed to fall gently to the equivalent of 8,000 feet,and maintained at that level by pressurizing the fuselage.
Piston-engined aircraft and turboprops have air compressors to maintain cabin pressure.Jet engines handle so much air that pressurization supplies can be bled from them under great pressure,and already very hot.These are cooled in a heat-exchanger,from where some is fed to the cabin and the excess expelled.Full pressurization can add a ton of weight to a Boeing 747.
The higher a plane flies,the colder the temperature of the air around it.At 35,000 feet and above,the outside air is around minus 70 degrees Fahrenheit(minus 50 degrees Celsius) far,far colder than an icebox.
As an aircraft climbs,atmospheric pressure falls too,from about 15
pounds per square inch at sea level to around four pounds per square inch at airliner cruising height,which may be 10.000 feet above the highest altitude that will sustain human life.Cabin pressure is usually allowed to fall gently to the equivalent of 8,000 feet,and maintained at that level by pressurizing the fuselage.
Piston-engined aircraft and turboprops have air compressors to maintain cabin pressure.Jet engines handle so much air that pressurization supplies can be bled from them under great pressure,and already very hot.These are cooled in a heat-exchanger,from where some is fed to the cabin and the excess expelled.Full pressurization can add a ton of weight to a Boeing 747.
飞机飞得越高,舱外气温越低.大约35000英尺以上地方,机舱外的气温是-70华氏度,（-50摄氏度）,比冰盒冷得多了. 飞机越往上攀升,气压也越低.从海平面的每平方英寸15磅降到航班飞行高度的每平方英寸4磅,这个航行高度大约...
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