These substantial evidences analysis includes following three aspects: First, this paper built one simultaneousequationmodel of Shanghai City commercial housing sales price.
这些实证分析包括以下三个方面：第一，建立了一个上海市住宅一级市场商品住宅价格联立方程模型。
2
The stiffness problem of differential equation set has been solved and a kinetic model of simultaneous pyrolysis reaction has been proposed.