名词
中文翻译：液压下降
同义词：
['hydraulic device', 'hydraulic system']
例句：
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1. Theengineer designed a hydraulic drop to control the flow of water.
工程师设计了一个液压装置来控制水流。
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2.The hydraulic drop was used to lift heavy loads from the ground.
液压装置被用来从地面抬起重物。
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3.The hydraulic drop was tested before it was put into use.
在投入使用之前，对液压装置进行了测试。