名词
中文翻译：压紧装置
同义词：
['pressure control gear', "pressure hold-down例句：1. The engineer used a special tool to hold down the bolts in place.（工程师使用一种特殊工具将螺栓固定到位。）2. The brake system uses a combination of levers and gears to hold down the vehicle's speed.（刹车系统通过杠杆和齿轮的组合来减速车辆。）"]
例句：
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1. The engineer used a special tool to hold down the bolts in place.
工程师使用一种特殊工具将螺栓固定到位。
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2. The brake system uses a combination of levers and gears to hold down the vehicle's speed.
刹车系统通过杠杆和齿轮的组合来减速车辆。
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3.The car's engine is designed with a special gear that holds down the fuel efficiency.
汽车发动机设计有一种特殊的齿轮，以保持燃油效率。