名词
中文翻译：手动操作的阀门
同义词：
['manually operated valve', 'manual valve例句：1. This hand-operated valve is designed for industrial applications.（这个手动操作的阀门是为工业应用设计的。）']
例句：
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1. This hand-operated valve is designed for industrial applications.
这个手动操作的阀门是为工业应用设计的。
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2.The engineers had to manually operate the hand-operated valve to prevent the leakage.
工程师们不得不手动操作这个手动操作的阀门，以防止泄漏。
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3. The hand-operated valve was a critical component in the system's operation.
手动操作的阀门是系统运行的关键部件。