Further increase product variety varieties, improving product curing nature, and are active in the development of heteromorphosis boards to meet market needs more tune.

对现有小规模异型材生产企业要进，提高生产规模和产品质量。研究开发塑料门，适应各种建筑的需要。

The problems existed in extrusion process of two sorts large section hollow extrusion profilesare introduced. The concrete measure and extrusion consequence of the improved prothole die are given.

介绍了两种大断面的空心型材在挤压过程中在的问题，阐述了进挤压模具的具体措施和生产时的挤压结果.

Profile is poriferous cavity, advocate the liner steel that there is Lengza armor plate to be made inside antrum, in order to increases the strength of window of model steel door.

型材为多孔空腔，主腔内有冷扎板制成的内衬，提高塑门窗的强度。

As a new kind of material, composite has the advantage of designable, the designable parameters include the type of the fiber and matrix, the percent of the volume, the direction of the laminate, etc.

复合材料作为一种具有复杂结构的新型材料，其主要优点和特点在于其内部结构可设计性。