plutonium-in-air filter paper monitor滤纸: filter paper法: law空气: air; atmosphere含: keep in the mouth钚: plutonium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:滤纸法空气含钚量监测仪，即可在微信中查询翻译
