准分子激光器已用于血管成形术操作打开堵塞的动脉阻塞。
Excimer lasers have been used in angioplasty operations to open up blockages in clogged arteries.
如果冠状动脉没有重大堵塞，心脏的各个部位会收到等量的氧气。
If all the coronary arteries are free of significant obstructions, all parts of the heart will receive equal amounts of oxygen.
九年后，他被迫住院动手术，以对付五条严重堵塞的冠状动脉。
Nine years later he was hospitalized for an operation to bypass five seriously blocked coronary arteries.
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