attenuation/rarefactionrarefy稀薄: thin; rare; rarefied; wishy- ...化: change; turn; transform空气稀薄化: rarefaction of air稀薄化作用: dilatant action润滑油稀薄化: dilution of lubricating oil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:稀薄化，即可在微信中查询翻译
