“pressure vacuum valve”的概念、定义、翻译、参考文献-科学参考

单词	pressure vacuum valve
释义	pressure vacuum valve Encyclopedia 工学锅炉阀门释 pressure vacuum valve压力真空阀维护压力容器气压平衡，减少介质挥发的安全节能装置。由压力阀和真空阀两部分组成。又称呼吸阀、PV阀。
随便看	Information Science in Theory and Practice Information Science：An Integrated View information screening information screening theory information search information security information security architecture information security incident information security laws Information Security Management Systems information security policy Information Security Technology-Guideline for Personal Information Protection within Information System for Public and Commercial Services Information Seeking in Electronic Environments information selecting behavior information self-organization information sender information series information service Information Service and Users information service capability information service effect information service efficiency information service guarantee information service industry information service industry chain

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