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