Return air duct section. Single - or double-line ducts can be specified.

回风管道部分。可以指定单线管道或双线管道。

youdao

My vacation begins next week. I've got a return air ticket to my hometown.

我下周休假，已经买好了回家乡的往返机票。

youdao

Tower 2 at core end needs a closed ceiling zone to hide the ducts of return air going into shafts.

在芯筒尾部的2号楼需要有一段封闭的吊顶区域以隐藏回风管道进入斜井。

youdao

He also announced that two Turkish military air ambulances had been sent to Israel to help return the wounded.

VOA: standard.2010.06.01

Uganda FA President Dennis Obua said Egypt had offered to pay for the teams' return air-tickets, accommodation and meals, but that they were now back-tracking.

BBC: Zone 5 qualifiers in chaos

UTC's solution: Pass the return air through an aluminum filter sprayed with titanium dioxide that, hit with ultraviolet rays, sets off a chemical reaction that breaks down nasty organic compounds like benzene and formaldehyde into carbon dioxide and water.

FORBES: Companies & Strategies

The panel recommended an alternative force structure that would return the Air Force and Navy to the size proposed by the BUR almost 20 years earlier.

CENTERFORSECURITYPOLICY: Center for Security Policy | The Measure of a Superpower: A Two Major Regional Contingency Military for the 21st Century | Page: 2