1.
An envelope or wrapper for mail.
封套，信封为邮寄而制的信封或封套
2.
phonograph records were sold in cardboard jackets.
唱片装在封套里出售。
3.
encapsulated fuel unit
加密封套的燃料元件
4.
tamper evident valuable property envelope
防干扰贵重财物封套
5.
retrievable hydraulic-set casing Packer
可收回的液压坐封套管封隔器
6.
fasten(the cover,flap,etc of sth)with glue,paste,etc
（用胶水、浆糊等）粘住（封套、信封口等）
7.
He opened the cover in which the message was enclosed.
他把密封那份电报的封套拆开。
8.
book [ dust ] jacket
(套在书藉外面可以取下的)外封套
9.
A paper or thin cardboard envelope for a phonograph record.
唱片套子留声机唱片的纸套或薄纸板封套
10.
Bool jacket: Protective wrap-round to a book, usually made of paper. Also called Jacket, Dust jacket.
护封:包卷书本的保护封套。它通常用纸造成。
11.
A brief publicity notice, as on a book jacket.
简介，推荐广告印在书籍封套上的简介
12.
a record sleeve, album, library
唱片的封套、 唱片集、 唱片库.
13.
What is the difference between Glassine envelopes &BOPP polypropylene?
玻璃纸封套和BOPP聚丙烯有什么不同？
14.
Lyman tore the cover from the top of the package.
莱门把那包东西顶上的封套撕开。
15.
water-seal latrine unit
(成套)水封式厕所
16.
BALL JOINT SEAL BOOT
球形接头密封防尘套
17.
She lost faith in feudal traditions.
她不再相信封建的老一套了。
18.
He lost faith in feudal traditions.
他不再相信封建的老一套了。