1·A trigonal bipyramid has three equatorial and two axial positions.
一个三角双锥体有三个赤道位和两个轴向位。
2·The grey cluster model with fixed weights is introduced, then a new evaluation model based on trigonal whitenization weight function is formulated.
在灰色定权聚类模型的基础上，提出了一种基于三角白化权函数的评估模型。
1·So it's trigonal pyramidal.
所以它是三角形金字塔。