氧 oxygen scavenging chemical: 化学除氧剂scavenging: 净化; 排气; 清除;扫气;换气;排污; 清理垃圾; 清洗; 扫气清除; 扫选; 搜寻air scavenging: 用空气吹除bend scavenging: 弯流扫气blower scavenging: 扫气泵扫气下载手机词典可随时随地查词查翻译