disk envelop封套: entire; big envelope磁碟封口: disc seal封套: entire; big envelope (for holding documents, books, etc.)碟封管: disk-seal tube磁碟: disk; magnetic disc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:磁碟封套，即可在微信中查询翻译
