音标:['kɒŋkeɪvk'ɒnveks] ;
[医](拉concavoconvexus)凹凸的

concave-convex的用法和样例:

词汇搭配

  • convex concave凸凹的
  • concave convex凹凸的
  • convex and concave cutter凸凹铣刀
  • convex and concave milling cutter凸凹铣刀

汉字是由笔画构成的。笔画是书写工具在书写面上的运动,大概有三十种不同类型,有些是基本笔画,有些是复杂笔画。笔画对学习汉字以及书法都有重要作用。下面分别说明。注意,笔画的

发表于:2019-02-14 / 阅读(505) / 评论(0) 分类 英文语法词汇
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