塑料是什么  what's plastic

塑料的分類the classification of plastic

塑料的機械特性mechanical properties

塑料的熱特性thermal properties

塑料的電氣特性 electric properties

塑料的環(huán)境特性environment properties

塑料的模塑特性molding properties

常用塑料介紹 introduction of some common plastic

壁厚的設(shè)計 wall thickness design

筋的設(shè)計ribs design

凸臺、螺絲柱的設(shè)計bosses design

角板的設(shè)計gussets design

尖角的設(shè)計sharp corner design

拔模設(shè)計draft design

孔洞的設(shè)計holes and cores

倒扣的設(shè)計 undercut

模塑螺紋的設(shè)計Molded-in thread

模塑文字lettering

活動鉸鏈設(shè)計living hinge design

塑料軸承設(shè)計plastic bearing design