棱

• Demonstsatos for showing the edge liness and the area of the cuboid
  长方体棱长与表面积演示器
• Now let ' s study cuboids by their faces , edges and points
  下面我们就面、棱、顶点研究长方体。
• Measure the length of the edges . what law do you find
  师：量一量棱的长度？发现了什么规律？
• Plain washers , chamfered , for steel structures
  钢结构用倒棱平垫圈
• Measure the length of the edges . what law have you found
  师：量一量棱的长度？发现了什么规律？
• Ore potentiality analysis of mylonite zone of hetai gold mine field
  河台金矿田糜棱岩带含矿性分析
• Verification regulation of angular polygon
  正多面棱体检定规程
• Is there an approximate date of bastion ' s release
  有没有一个大致的时间可以透露关于棱堡何时放出？
• Chamfer and roundness of machined parts
  机加工件的倒棱和圆度
• Repeat the features of the faces , edges and points of a cuboid
  师：复述长方体面、棱、顶点的特征。