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.

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。

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The aspiration force company technology strength is tremendous, the optimization managing mechanism is nimble, own the senior engineer and supervisory engineering staff.

志力公司技术力量雄厚，管理机制优化灵活，拥有高级工程师和技术管理人员。

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The engineer explained by the square the working mechanism of the machine.

工程师精确地解释了这个机器的工作原理。

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It was designed by Eugenius Birch, a Victorian engineer who designed 14 piers after inventing a screw mechanism which holds the structures into the sea.

BBC: Blackpool North Pier 'must earn' to see 150 more years