名词
中文翻译：真空表
同义词：
['vacuum gauge', 'vacuum meter']
例句：
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1.The engineer used a vacuum watch to check the air pressure in the chamber.
工程师使用真空表检查腔室中的气压。
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2. The vacuum watch showed that the vacuum level was low.
真空表显示真空水平很低。
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3. The vacuum watch helped us understand the workings of the vacuum pump.
真空表帮助我们理解真空泵的工作原理。