scavenging valvescavengingvalve驱: drive转动驱气阀: rotary scavenging valve自动驱气阀: automatic scavenging valve旋转式驱气阀: rotary scavenging valve驱气: air purge; degas; gas freeing; purging下载手机词典可随时随地查词查翻译关注微信公众号：chachacidian，回复:驱气阀，即可在微信中查询翻译
