Be sure that valve is fully open. Apply heat to tube first. Transfer as much heat as possible through tube into valve. Avoid prolonged heating of valve itself.

要确保阀门处于开启状态。先对管道加热。尽可能多的将热从管道传递到阀门。避免延长阀门本身的加热时间。

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The report introduces fabricating and assembling process of fixed tube sheets type heat exchanger including tube bundle and shell, tubes passing through tube-sheets , etc.

本文介绍了超细长比的大型列管式固定管板换热器管系构架组装，穿管和管系与壳体组装工艺。

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Wind blows through the tube and makes it fly and dance around.

风吹过管子，使它飞起来，四处飞舞。

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Sharks and other ocean animals swim above and beside you as you walk through the tube.

VOA: special.2010.08.13

If it passed directly through the tube and nothing happened to it, it would come out to the outside world again.

如果它直接穿肠而过,中间没有任何事情发生,它又会回到外面去

耶鲁公开课 - 生物医学工程探索课程节选

Ask somebody, "What if you took a tube and you squirted water through it?

当问到,"要是你拿一根管子,向里面注水,让水喷出来

耶鲁公开课 - 心理学导论课程节选

Londoners typically find solidarity only in suffering or inconvenience: through Tube strikes, terrorist scares or the weather.

ECONOMIST: Bagehot

The Oyster card touch-and-go system was first introduced in London in 2003 to help speed up passage through Tube gates and bus doors.

BBC: London buses to offer NFC contactless card payments

His device will reportedly stream damp air containing microscopic water particles through a tube, while a laser diode beams light through the vessel onto a sensor located on the opposite side.

ENGADGET: Inventor patents laser microphone