【ptas】什么意思_英语ptas的翻译_音标_读音_用法_例句_在线翻译

ptas

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）

多项式时间近似方案

定义 4（PTAS）一个优化问题的多项式时间近似方案（PTAS）是一个近似算法，该算法的输入为问题的实例以及一个任意小的值ε > 0，满足这个方案是一个近似度为 1 + ε的近似

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经皮血管内支架成形术

...均行DSA及TCD检查,根据脑动脉狭窄的程度、范围、是否责任血管、脑血液循环代偿情况,选择合适的患者行经皮血管内支架成形术(PTAS),评价PTAS的疗效和是否安全。结论：只要技术熟练,严格掌握手术适应症,PTAS治疗脑动脉狭窄是安全和有效的。

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如比塞塔

②有些货币的符号或缩写用复数，如比塞塔（Ptas）、里亚尔（Rls）、卢比（Rs）等，一般去掉末尾的即为其单数形式，但卢比（urpee）的单数形式为Re。

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支架置入术

二、治疗经皮腔内血管成形+支架置入术（PTAS）是治疗颅内外动脉狭窄的一项新的突破。

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短语

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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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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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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更多双语例句

Female rivalries may intensify among the power elite, but Gallagher notes that they occur everywhere in society, from corporations to PTAs.

FORBES: Power Women And Their Power Nemeses
As far as we know, the IRS hasn't raided any PTAs yet.

FORBES: Taxing Matters: Going, going, deducted!
This Northwest Cluster event was sponsored by Great Seneca Creek Elementary School PTA, Matsunaga Elementary School PTA, Kingsview Middle School PTA and Roberto Clemente Middle School PTA. The PTAs in the Northwest Cluster of Montgomery County Public Schools are also looking to pilot a curriculum on bullying prevention through the Arts and Humanities Council of Montgomery County.

WHITEHOUSE: Susan burkinshaw | The White House

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