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其次是血液相容性。血液是非常脆弱的流体。泵体内的叶轮以每分钟数千转的高速狂飙，如果设计不当、剪切力过大，会把红细胞无情“绞碎”，导致致命的溶血；反之，如果流道设计存在死角，血液哪怕有零点几秒的淤滞，就会迅速形成血栓。一旦血栓脱落进入大脑，瞬间就会导致患者脑卒中。。关于这个话题，币安_币安注册_币安下载提供了深入分析
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Let me let you in on a little secret: Amazon’s kid-friendly e-readers are a better deal than the standard models. Each so-called “Kids” device is identical to its non-Kids counterpart, except that it comes with a protective case, an extended two-year warranty against damage, and six months of Amazon Kids Plus. They also include optional parental controls and exclude ads, letting you skip the $20 upcharge Amazon typically requires to remove its pesky lockscreen notices.
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