精选优质文档-倾情为你奉上Abstract: Based on the comprehensive analysis on the plastic parts structure service requirement, mounding quality and mould menu factoring cost. A corresponding injection mould of internal side core pulling was designed. By adopting the multi-direction and multi-combination core-pulling. A corresponding injection mould of internal side core pulling was designed, the working process of the mould was introduced初中1-6册文言文知识点归纳（强烈推荐）作者：佚名 文章来源：中学语文教学资源网 点击数：180 更新时间：2005-5-
