凹曲线 [
āo qū xiàn]
sag vertical curve
[数] concave curve
notching curve
- 相对于回形刀刃的凹曲线而言,这种刀刃具有一条延伸到刀尖的、温和的凸斜率曲线。
This blade has a gentle, sloping convex curve to the point versus the concave curve of the clip blade. - 无心磨削圆锥滚子母线的形状不是直线,而是凹曲线,分析了生产原因、影响因素,为进一步研究做好了铺垫。
The generatrix shape of tapered roller processed with centerless grinding was not straight line but curve one. - 无心磨削圆锥滚子母线的形状不是直线,而是凹曲线,分析了生产原因、影响因素,为进一步研究做好了铺垫。
The generatrix shape of tapered roller processed with centerless grinding was not straight line but curve one. The reason for that and influence factors were analyzed for further research.