即便是今天，敞篷车用于抬升和降低车篷的机械装置以及车体的加固装置仍然使它们比封闭式车厢的轿车车体更沉重，车内空间更狭小，安全系数更低，工艺更复杂。
Even today, the mechanism used to raise and lower the top, along with body reinforcements, make them heavier, less capacious, less secure, and trickier to engineer than their fixed-roof counterparts.
本文首先系统地分析了电封闭机械传动试验台的电气控制系统各部分的工作原理。
Firstly, the principle of the electrical control system of the electrical power closed mechanical drive tester is analyses.
介绍一种电封闭传动机械多功能试验台的工作原理、技术设计及其特点。
This text introduce us the work principle, technical design and feature of a electric sealed about multi functional transmission machine experimental set up.
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