Ducts shall be suitably welded or sealed for leakage.

Heated air is forced into the upper tier of ducts.

加热的气流被送入上面的一排管道.

Vapor or fumes may condense on piping, ducts, or stack walls.

蒸气或尘雾可能在管道, 烟道或烟囱壁上冷凝.

For legible text we need typographies with a simple ductus without complex details.

为了文本的易读,我们应该采用字形尽量简单的字体,而不需要太多复杂的细节.

The Application of X-ray Film in the Occlusion of Patent Ductus Aleriosus: Report of 10 Cases.

X 线电影在动脉导管未闭堵塞术中的应用(附10例报告).

The'ductus'represents the framework of a type.

上面的 “ 弯管”体现了这个字体的结构.

Sheet metal ductwork and specialties, complete with insulation, and dampers in accordance with drawings and specifications.

与图纸和规格相符的完全绝缘的金属片管路 、 特殊金属和阻尼器.

The meeting was a dud as far as new business was concerned.

从新业务的角度来看,这次会议毫无收获.

The OS is truly wonderful, and we're fools to have mistaken it for a dud.

他们的潜台词:这是个很棒的操作系统, 把它看作废物的人都是大笨蛋.

During yesterday's sham battle, party A fired a dud.

赤壁之战, 大火延烧了几天,敌军伤亡大半.

We lit the firecracker and waited for it to go off, but a dud.

我们点燃了炮竹然后等它爆炸, 但是失败了.

He replaced a dud valve.

他换掉了坏阀门。

That allowed the banks to release some of the reserves set aside to cover dud loans.

这样一来,银行可以动用(释放)部分用于弥补不良贷款损失的准备金.

The shells are of poor quality, there is another dud here.

这批子弹质量真差, 这又是一颗瞎火.

Pyongyang's last nuclear weapons trial, you'll recall, was a dud.

你会记得, 平壤上一次核武器试验是一个哑弹.

That allowed the banks to release some of the aside to cover dud loans.

这使得银行可以释放一些储备金来冲抵不良贷款.

Your mortar barrage round on the intended target. That round will be a dud.

迫击炮弹幕只有一发能命中目标, 这一发通常是哑弹.

They spent most of 2009 on the sidelines , as fretted about their capital ratios and dud assets.

当羁系者为银行巨头们的资本率和有毒资产伤透头脑时,巨头们在09年的大多时间里便是搞搞副业了.

This battery is a dud.

这电池是废的.

The defining characteristic of a true dud is that he or she resists improvement staunchly.

真正的庸才最典型的特点是:他或她会坚决抵制进步.

He stepped on a dud mine.

他踩到了一颗哑雷上.