polyconic

polyconic

1. world polyconic grid

世界多圆锥投影坐标方格

2. polyconic projection

多圆锥投影

3. polyconic chart

多圆锥投影图

4. modification polyconic projection

改良多圆锥投影

5. In this paper,a new small-sized bit is introduced.The bit is mainly composed of a biassed polyconic cutter,a cylindric roller and two bit legs.

文章介绍了一种新型小尺寸钻头，它主要由一个偏置的多锥形牙轮和一个圆柱形滚轮及两个牙掌组成。

6. ordinary polyconic projection

普通多圆锥投影

7. rectangular polyconic projection

正交多圆锥投影