在特别长的飞行时，燃料可以占到飞机起飞重量的40%，所以大约有20%的燃料时用来运输其它燃料的。
On really long flights, fuel can account for 40% of a plane's take-off weight, so that around 20% of the fuel is used to carry the rest of the fuel.
主要通过飞行参数记录仪(FPR)记录的数据研究战斗机起飞外挂重量对飞机结构疲劳寿命的影响。
How the variation of take-off suspension weights affects the structural fatigue life is investigated through surveying actual flight parameter recorder (FPR) data.
飞机不同的装挂重量使飞机每次起飞时实际载荷变化。
The suspension weights of a fighter alters the actual service load for each take-off.
通过调查飞机挂弹架次比例，发现情况变化随意性很强，基本无统计规律可循，因而按每架次实际起飞外挂重量计算疲劳损伤显得尤为必要。
The investigation shows that actual take-off suspension weights chang considerably and irregularly, so it is important to calculate fatigue damage based on actual suspension weights for each flight.
通过调查飞机挂弹架次比例，发现情况变化随意性很强，基本无统计规律可循，因而按每架次实际起飞外挂重量计算疲劳损伤显得尤为必要。
The investigation shows that actual take-off suspension weights chang considerably and irregularly, so it is important to calculate fatigue damage based on actual suspension weights for each flight.
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