The tip of the pencil breaks against the bright paper.
铅笔尖把那张亮白的纸弄得狼藉一片。
I write the sad to write on the paper, broke the tip.
我把悲伤写在纸上，写断了笔尖。
This paper introduces application and design of full radius hob on tooth tip.
介绍了齿顶整圆弧滚刀的应用和设计。
This paper introduces application and design of full radius hob on tooth tip.
介绍了齿顶整圆弧滚刀的应用和设计。
应用推荐