Seven years ago his father, Robert, produced a diamond in a high-pressure chamber of carbon gas and dropped it into an acid solution to clean it off.

七年前他的父亲罗伯特在一间高压碳气室中制造了一颗钻石，把它放入酸性溶液中清洗干净。

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So after each layer is deposited, nitrogen fluoride is pumped into the chamber and is split to release highly reactive fluorine atoms that clean the walls.

所以在每层材料放置好之后，氮氟化物就被泵进工作舱中并分散开来，释放出高活性的氟原子来清洁墙壁。

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Steel body, stainless steel centrifugal chamber, key components are imported, easy to clean and durable.

钢制机身，不锈钢离心腔，关键件进口，易清洁，耐用。

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And last June,says Sittenfeld, the House passed the American Clean Energy and Security Act, the first bill out of either chamber of Congress to directly take on the challenge of global warming.

VOA: standard.2010.02.25