simple set单集simpleadj.简单的；朴素的；单纯的；笨的Simple ecological view朴素生态观simple supporting beam筒支梁simple repeat sequence简单重复序列simple catalytic curve简单催化曲线simple back projection简单反向投射simple type identifier简单标准simple matching method简单匹配方法simple estimate method简单估算法simple logical element单逻辑元件simple tertian malaria间日疟

1. The underlying method is based on the simple wave solutions of a system of hyperbolic partial differential equations.
   基本的方法是以双曲型偏微分方程组的简单波解为根据的。