Objective: To evaluate the myocardial protection of changing temperature blood cardioplegia for heavy valve replacement.
目的：探讨变温含血停跳液对重症心脏瓣膜置换的心肌保护作用。
The fitting of a heavy, three valve-cap on the Macondo oil well on July 15th marked the opening of just such a new act in the drama of the Deepwater Horizon, its loss and its aftermath.
7月15日，Macondo（马贡多）油井装上了一个沉重的三阀井盖，标志着深水地平线号这场戏剧（包括损失和后果）新的一幕的开始。
Red Valve Pinch Valve sleeves are constructed similar to a heavy-duty truck tire.
美国红阀公司的夹管阀套管结构类似于重型卡车的轮胎。
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