名词
中文翻译：外部操作阀门
同义词：
['外部操作阀，外部操作闸例句：1. The external operating valve is responsible for controlling the flow of gases in the pipeline.（外部操作阀门负责控制管道中气体的流动。）']
例句：
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1. The external operating valve is responsible for controlling the flow of gases in the pipeline.
外部操作阀门负责控制管道中气体的流动。
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2. The engineers had to replace the external operating valve due to its failure.
工程师们不得不更换外部操作阀门，因为它已经失效了。
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3.The external operating valve was designed to prevent leaks and ensure safe operation of the system.
外部操作阀门被设计来防止泄漏并确保系统的安全可靠运行。