1.
water-seal latrine unit
(成套)水封式厕所
2.
The test tube is closed at one end with a hydraulic seal.
试管的一端为水封所封闭。
3.
Light and water are necessary to plants.
光和水封植物是必要的。
4.
Study on the Gate s Retractile Seal Engineering Research with High Water-pressure;
高水头弧形闸门伸缩式水封止水研究
5.
multistring hydraulic-set packer
多管水力坐封封隔器
6.
a self - sealing envelope.
（不用胶水）封口的信封
7.
hydro-set permanent packer
永久式水力坐封封隔器
8.
an adhesive envelope
封口涂有胶水的信封
9.
He licked the gummed flap and sealed it shut.
他舐了舐信封的胶水层，封上了信封。
10.
a watertight compartment, joint, seal
水密室、 水密接合、水密封.
11.
Waterproof and Shutoff for Closing of Pressured Dewatering Well Located in Foundation Pit
基坑内承压降水井封井的防水与封堵
12.
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）
13.
closed aqueduct system
密封式输水管道系统
14.
seals without the application of moisture.
不需要用水就可以封口。
15.
water pressure test for strength and tightness
水压强度和密封性试验
16.
hydraulic-set dual hanger
水力坐封双管悬挂器
17.
hook wall flooding packer
注水井悬挂式封隔器
18.
WATER-PROOF ARMORED-CABLE PACKING GLAND
防水铠装电缆密封接头