名词
中文翻译：Unknown
同义词：
['valve position', 'valve setting', 'valve positioning']
例句：
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1. The valve is located at the bottom of the pipe.
阀门位于管道底部。
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2.The valve must be adjusted to ensure proper flow.
阀门必须调整以确保适当的流量。
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3. The valve was found to be faulty and needed replacement.
阀门被发现有故障，需要更换。