名词
中文翻译：示踪管阀
同义词：
['tracer valve', 'tracer valve', 'tracer control valve']
例句：
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1. The engineer installed a tracer spool valve to monitor the flow of oil in the pipeline.
工程师安装了示踪管阀来监测管道中石油的流动。
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2. The tracer spool valve was used to identify leaks in the underground pipeline system.
示踪管阀被用来识别地下管道系统的泄漏点。
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3.The technician carefully checked the tracer spool valve to ensure it was functioning properly before starting the maintenance work.
技术员仔细检查示踪管阀，确保其正常工作后才开始进行维护工作。