“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	L ascorbic acid L-ascorbic acid L-ascorbyl palmitate lase lasecon LASEK laser laser ablation laser ablation deposit laser ablation deposition laser ablation micro thruster laser ablation resonance ionization spectrometry laser ablation-resonance ionization spectrometry laser ablation sampling laser ablative propulsion laser acceleration laser accelerator laser action zone laser acupuncture laser acupuncture anesthesia laser aligner laser aligning laser altimeter laser altimetry satellite，LAS laser amplifier

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