parabolical

Here presented are efficient methods corresponding to two demand patterns: the linear trend and the parabolical trend.

就线性函和抛物线型函，了寻求最优价格和生产策略简单方法；

This papaer presents a new structure,which is compound large span structures of Γ frame parabolical three hinged arch space truss.

大度空间结构被广泛应用于实际工程中,风荷用效应是大结构设计重要内容。