低气压和低气温均构成对机车轮周功率(内燃牵引时)和列车阻力的影响。
Low atmospheric pressure and temperature of surrounding air are both effected to locomotive output power at wheel rim and train resistance with diesel traction.
通过对16 V 2 40zje及12v 2 80zj两种柴油机进行的适应高原环境的改进设计，完全可以达到青藏铁路对内燃牵引动力的要求。
The design of 16v240zje and 12v280zj diesel engines have been modified and tested in highland environment and prove to meet the requirements of the traction power for Xining-Lhasa railway.
与内燃机不同的是，电力汽车具有完美的扭矩表现，其牵引力也因此得名，从零转速起，就像离弦之箭一样不需要借助加速箱。
Unlike internal-combustion engines, electric motors have full torque, as pulling-power is called, from zero revs. They are thus predisposed to go like a bat out of hell without the aid of a gearbox.
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