自2000年以来美国和欧洲的外科医生已为220名患者植入了这种左心室支持系统。

Surgeons in the United States and Europe have implanted such ventricular assistance devices (VAD) in 220 patients since 2000.

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模具报价决策支持系统是以多模型为基础的，文中详细地分析了基于混合关联分析法的模具企业自明确模型的建立方法和数学模型，并且在系统中以向导的方式实现；

The method and mathematics model to build Enterprise Self-explicated Mode based on Hybrid Conjoint Analysis is analyzed, which is realized in the way of wizard in the system;

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