从支承形式上来看，简支转连续梁桥主要包括单支座和双支座两种主要的结构形式。
From the support forms, the simply supported-continuous bridges have mostly two main structural forms: single prop and dual prop.
结果经冠状动脉造影证实44例为单支病变，52例为双支病变，26例为三支病变。
Results 44 patients were single branch lesion, 52 patients were 2 branch lesions, 26 patients were 3 branch lesions.
结果：有肾微循环障碍组冠状动脉狭窄率较非肾微循环障碍组高，且双支、多支病变更严重。
Results: the rate of coronary artery stenosis of the former group is higher than that in latter group, and double-branch, multi-vessel disease was more serious.
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