单词pinacoid
n.: 轴面;平行双面网络: 轴面体
平行双面
轴面
The shape of cross-section is an ellipse folded in half through one symmetry axis, and the axis keeps perpendicular with pinacoid -view.
断面形状为沿对称轴对折的椭圆,此对称轴始终垂直于轴截面,其方向与平面图上的流道中线无关。