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.
对压滤机自动卸饼装置进行改造，使压滤机自动卸饼功能得以实现，并提高压滤机的安全性和工作效率，降低工人的劳动强度及耗材的费。
This paper reforms automatic unloading pan device of press, achieves automatic unloading pan, increases safety and working efficiency of press, reduces workers Labour strength and material cost.
分析了尿素装置氨气提塔上封头泄漏的原因，采取了相应的措施，使安全生产得到了保障。
The cause is analyzed for the leakage at the upper cover of the ammonia stripper in a urea unit, and relevant measures have been taken, with assurance of safety in production.
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