This axis has no crossing axis.
该轴没有交叉轴。
Sphenoid projection, a projection has more projective centers which are the crossing points intersected by minor axis of the ellipsoid and the parallel planes.
楔形投影是以过该点纬线所在平面与椭球短轴交点为投影中心作中心投影。
The headstock piece ball valve is a spherical hole, around the axis perpendicular to the channel rotation, so as to achieve the purpose of crossing gate.
球阀的启闭件是一个有孔的球体，绕垂直于通道的轴线旋转，从而达到启闭通道的目的。
The headstock piece ball valve is a spherical hole, around the axis perpendicular to the channel rotation, so as to achieve the purpose of crossing gate.
球阀的启闭件是一个有孔的球体，绕垂直于通道的轴线旋转，从而达到启闭通道的目的。
应用推荐