The technology of CAD has entirely changed traditional design of handwork,plotting, tracing and produce with stylebook.

• 本文应用高聚物在有限槽道内无粘性加热稳态流动时的换热理论确定定型模的理论长度，按照换热器的计算方法分析定型模内部的热平衡,以期达到最佳的设计目的。