The change of cerebral circulation time.

脑循环时间的改变。

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There was an abnormally long circulation time;

视网膜动脉完成充盈循环时间延长；

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One method is to encapsulate hemoglobin inside lipid vesicles about 0.2 microns in diameter. This technique also increases the circulation time.

一种方法是将血红蛋白包裹在直径大约为0.2微米的油脂泡囊中，这项技术还能提高循环时间。

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At a time when newspaper circulation is declining rapidly around the world, Financial Times Web site (FT) says its subscriptions are up 22 percent, while revenues have jumped 30 percent.

VOA: standard.2009.12.05

However, Hoggart refrained from using the more polemical terminology that was in circulation at the time.

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The mining of data on how different banknotes move through the economy would make it easy to spot suspicious transactions for example, a large deposit of notes that had been out of circulation for a long time.

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The European edition of TIME is published specifically for circulation within Europe, the Middle East and Africa and offers readers access to Time Inc.

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