A different process occurs when there is interaction between a polar trough and the main polar front, giving rise to an instant occlusion.

当极地槽和主要的极锋相互作用，会产生不同的过程，会引起短暂的锢囚。

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Objectives This experiment is aimed to study the influence of instant and gradual reperfusion on lung reperfusion injury in the modified balloon occlusion model using Swan-Ganz catheter.

目的建立肺栓塞相关肺缺血-再灌注损伤动物模型，比较快速和逐步再灌注对肺再灌注损伤的影响。

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