The colony whines a centerless loud drone that vibrates the neighborhood.
蜂群嗡嗡喧闹的哀鸣振动邻里.
The grinder is centerless therefore not locating on any centers.
这个磨床是无心的(无心磨床),由此不定位于任何中心.
The generatrix shape of tapered roller processed with centerless grinding was not 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.