During the reperfusion period, endothelial dysfunction, activation of endogenous enzymes, leucocyte recruitment and activation all lead to the generation of oxygen -derived free radical.
再灌注期间，上皮细胞功能障碍，内源酶激活，白细胞聚集并活化，都会导致氧自由基的产生。
During this period, synaptic transmission was primarily mediated by activation of NMDA receptors, suggesting that most synapses were functionally silent.
在这段时间内，突触传导以激化的NMDA受体，并显现大多数是无讯号突触。
This type of gold deposit, formed mainly in the craton activation stage, occurred in the transitional period from a compressive regime of late or post collision to an extension one.
金矿床主要形成于克拉通活化阶段，其总的构造背景可概括为由挤压、碰撞作用晚期或期后向伸展构造的转变时期。
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