低速档

轿车变速箱低速档齿轮动力学仿真及热分析

Dynamic Simulation and Thermal Analysis of Car Transmission Low Shift Gears

开车上山用低速档。

Use a low gear to drive up the hill .

大型卡车在爬陡坡时，需要换低速档。

Large trucks need to gear down going up steep hills .

为什么低速档对折叠车如此重要？

Why are low gears important for folding bikes ?

她表示，全球经济已在2013年底转强，但仍然卡在低速档。

She said that the global economy had strengthened at the end of 2013 but is still stuck in low gear .

在回流式无级自动变速传动系统调速特性和传动效率分析的基础上，以提高效率为出发点，通过对原有系统低速档、倒档工况下的效率分析，并对原有结构进行了优化。

On the purpose of improving efficiency of continuously variable transmission with reflux power , efficiency of previous system under low gear and reverse gear have been analyzed to optimize its structure based on analysis of speed modulation characteristic and transmission efficiency of transmission system .

好了，我要考虑挂低速加力档。

Right , I 'll think low range .