Imports of cut-off valve stem and valve seat sealing surface perpendicular to the axis.
进口截止阀的阀杆轴线与阀座密封面垂直。
2
To investigate the parameters of parallel cut blast without empty holes, an advanced numerical method is used to study the explosion effect of charge in hole perpendicular to a free surface.
为了考查无空孔直眼掏槽爆破参数，采用数值模拟方法研究单自由面垂直炮孔的爆炸作用问题。
3
Core plugs are ordinarily cutperpendicular to the axis of the core or parallel to the axis, called horizontal and vertical plugs, respectively, when cut from a vertical wellbore.