Expanding circulating oil cavity on hydrogen side can make circulation free.

扩大氢侧回油腔的容积改进了国产机回油不畅的问题。

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As mailboxes throughout the country were being stuffed with newsprint, circulation of free papers in Denmark rose to more than two million, Mr. Bakker said.

丹麦全国各地的信箱塞满了报纸，免费报纸发行量上升到200多万份。

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A blood clot from somewhere in his body had broken free and been carried through the circulation into the heart, then lodged in his lungs.

他身体某处的血栓块脱落，通过血液循环进入他的心脏，停留在他的肺部。

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But for Richard Muller, this free circulation also marks a return to how science should be done.

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She underlined also that it is imperative for governments to promote and facilitate the free circulation of artists among countries, as a way to sustain the vitality of societies and renew their capacity for innovation.

UNESCO: Irina Bokova and Austrian State Secretary Reinhold Lopatka celebrate the UNESCO Art Collection | United Nations Educational, Scientific and Cultural Organization

However, during the past two decades the paper's circulation has gone into free fall, declining to just over a million today.

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