名词
中文翻译：防护阀同义词
同义词：
['protective valve', 'safety valve']
例句：
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1. Theguard valve prevents the gas from leaking out.
防护阀防止气体泄漏。
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2. Theengineer carefully inspected the guard valve beforestarting the machine.
工程师在启动机器前仔细检查了防护阀。
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3. Theguard valve is essential formaintaining safe operations in a chemicalplant.
防护阀对于化工工厂的安全操作至关重要。