名词
中文翻译：活塞机构
同义词：
['piston system', 'piston device', 'piston mechanism']
例句：
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1. The piston mechanism is responsible for the movement of the engine's cylinders.
活塞机构负责发动机气缸的运动。
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2.The piston mechanism is crucial in maintaining the proper functioning of the engine.
活塞机构在保持发动机正常工作中至关重要。
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3.The piston mechanism has been improved significantly since the introduction of new materials.
自从引入新材料后，活塞机制得到了显著改进。