从发动机外特性试验结果看：随着燃料中乙醇含量的增加，发动机最大扭矩和额定功率逐渐降低；
The results of engine full-load characteristic show that the power output of engine decreases as the ethanol volume concentration of diesohol fuel increases.
本文采用曲线拟合及曲面拟合的方法，对商用车发动机外特性和发动机万有特性进行数学模型描述。
It is identical curve surface or curve in this paper. Business car engine's characteristics describe with mathematics' model.
对某航空发动机复合材料外涵道机匣构件进行了结构有限元建模与线性屈曲特性的有限元分析。
The structural finite element modelling and the finite element analysis of linear buckling characteristics of the composite by pass duct case of aeroengine are carried out.
通过对发动机进行的负荷特性和外特性对比试验结果表明，高压共轨电控喷油系统在提高发动机经济性和改善排放方面具有巨大潜力。
The constant speed and full-load characteristics tests showed that the system had great potential to improve the engine economic performance and exhaust emissions.
通过对发动机进行的负荷特性和外特性对比试验结果表明，高压共轨电控喷油系统在提高发动机经济性和改善排放方面具有巨大潜力。
The constant speed and full-load characteristics tests showed that the system had great potential to improve the engine economic performance and exhaust emissions.
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