名词
中文翻译：自动真空阀同义词
同义词：
['automatic vacuum control valve', 'automatic vacuum shutoff valve']
例句：
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1. The automatic vacuum valve is used to prevent air leakage during the operation of the machine.
自动真空阀用于在机器操作期间防止空气泄漏。
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2. The automatic vacuum valve was designed to ensure that the system remained sealed and free from contamination.
自动真空阀被设计成确保系统保持密封，不受污染。
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3. The automatic vacuum valve was tested for proper functioning before being installed in the factory.
自动真空阀在安装前进行了测试，以确保其正确运行。