double casing中文什么意思

双层罩

双属外壳

• double:    adj. 1.两倍的，加倍的。 2. ...
• casing:    n. 1.装箱，装袋，入鞘。 2.〔 ...
• double-casing:    双层机壳式; 双层外壳

例句与用法

1. Double case construction fuel tank
   双层包箱
2. This device has many advantage character with lower flow , higher delivery lift , small area for occupying and also has double cases structure , in which internal case is vertical and sectional type and external is simple sack type in order to guarantee safety arriving without any leaking absolutely
   该型泵具有流量小、扬程高，占地面积小的优点，该泵为双层壳体结构，内壳为立式节段式，外壳为筒袋式，确保运行安全，达到绝对无泄漏。