名词
中文翻译：阀门运动
同义词：
['valve movement', 'valve action']
例句：
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1.The valve motion of the engine was smooth and efficient.
发动机的阀门运动平稳高效。
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2.The valve motion is crucial for maintaining proper airflow in the engine.
阀门运动对于保持发动机内空气流通至关重要。
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3. During the startup process, the valve motion is controlled by a computer system.
启动过程中，阀门运动由计算机系统控制。