密闭

The article introduces a fire autoalarm which can be used in large airtight oil depot or fuel storehouse.

摘要文章提出了一种大型密，密燃机房等场所用到的火灾自动报警装置。

Biscuits will stay crisp if you keep them in an airtight tin.

如果你把饼干放到一个密的铁罐里, 它就会保持松脆。

Built-in high up to 1500MAH free maintenance seaied lead-acid rechargeable hattery.

1、内置可充电免维护、容量高1500Mah，密铅酸蓄电池。

Objective To study the effect of treatment intractable ascites by ascites direct veinous reinfusion closed continuously.

目的探讨连续密式腹水直接静脉回输治疗顽固性腹水的疗效。

The electric generator applies a mode of semitight twin flue and reduces noise and room temperature;therefore the customer regards it highly.

发电机采用了半密双风道方式，极大地降低噪温，深受客户欢迎。