【摘要】 对于孕镶工具 ,有诸多因素对其性能的发挥起着作用。诸多因素的作用不是孤立的 ,而是相互联系的 ,应存在着一个作用的关联点——“吃入深度”。文章介绍了和评论了一些吃入深度的计算公式 ,导出了新的算式。更多还原

【Abstract】 As to the pregnant tools,there are many factors that play roles on its performance.The functions of these are not isolated but rather mutually related with each other.There should be a linking point in them,namely the biting depth.The paper introduces and reviews some biting depth calculation formulae and deduces new formula.更多还原