1. 塑料材料 Plastic material ❖聚合物状态与塑料成型 Polymer state and plastic moulding ❖塑料分类 Classification of plastics 2. 结构工艺性 Plastic part manufacturability ❖尺寸精度 Dimensional accuracy ❖壁厚 Wall thickness ❖加强肋 Rib ❖支承面 Support surface ❖脱模斜度 Draft ❖孔 Hole ❖螺纹 Screw ❖齿轮 Gear ❖嵌件 Insert ❖表面标记 Surface marking
