Ptas
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- abbr. 家庭教师协会（Parent-Teacher Asociations）；贸易协定（Preferential Trade Arrangements）；多项式时同的近似方案（Polyomial Time Approximation Scheme）
双语例句
- 1. A polynomial time approximation scheme (PTAS) for this problem is presented.
- 给出了一个多项式时间近似方案(PTAS)。
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- 2. Conclusion PTAS is an easy and safe therapy for aged patients with extracranial carotid stenosis.
- 结论PTAS是治疗老年颅外段颈动脉狭窄的简便安全有效方法之一。
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- 3. Conclusion: PTAS for the treatment of neck and cranial artery stenosis is safe, easy and effective method.
- 结论：腔内支架成形术治疗头颈部动脉狭窄是一种创伤小、安全易行、疗效确切的治疗方法。
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- 4. Conclusion PTAS can effectively relieve blood circulation disturbance, and may become a main method in treating of brachiocephalic artery stenosis or occlusion due to technically easy performance.
- 结论经皮血管内支架成形术可有效解除头臂动脉阻塞所致的血液循环障碍，因其技术简便，可成为治疗头臂动脉狭窄或闭塞性疾患的主要治疗手段。
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- 5. Conclusion PTAS can effectively relieve blood circulation disturbance, and may become a main method in treating of brachiocephalic artery stenosis or occlusion due to technically easy performance.
- 结论经皮血管内支架成形术可有效解除头臂动脉阻塞所致的血液循环障碍，因其技术简便，可成为治疗头臂动脉狭窄或闭塞性疾患的主要治疗手段。
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