Open the purge valve until the water flows clear and free of bubbles.

打开排气阀，直到水流清澈没有气泡。

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Microscope cover glasses are made of pure white borosilicate glass with excellent chemical resistance and flatness, and are free of bubbles and scratches.

盖玻片是由经过优良化学阻力和平滑处理的纯白色光学玻璃制作而成的，无气泡和刮痕。

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The model for the escape of rising gas bubbles at free surfaces, which is a part of the drift-flux model, has been improved to include a rate for their escape.

为上升气泡沫的逃亡·模型在冲销-磁束的模型一部份的免费表面已经被改良为他们的逃亡包括比率。

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And so do we want to say, do you want to argue that is just one instance of one of these bubbles, one of these manias take place even in free market.

那么您是否可以这么说,这只是众多泡沫，或者众多不规范行为中的一项,自由市场经济也不是万能的。

斯坦福公开课 - 经济学课程节选

Greenspan claims the Federal Reserve can't prevent bubbles, that these excesses of ebullience are part of the natural order of a free economy.

FORBES: Fact and Comment

More people in their loyalty card scheme, more information on their shopping habits (but not their browsing habits, we assume), and if the draw of being able to browse Facebook for free during the festive season brings in a few customers, then that all bubbles through to the bottom line.

FORBES: Every Little (Bit of Wi-Fi) Helps The Bottom Line, as Tesco Put Their Customers Online