nub yarn
疙瘩花式纱线

damn near worn down to the nub.
一把几乎解体的石捶

The spokes of the wheel diverge from the nub.
轮辐从轮毂向四周分出。

Treatment of front nub by porcelain post crown.
利用烤瓷桩冠修复前牙残根的临床应用

That is the nub of the USChina currency dispute.
这正是中美汇率摩擦的症结所在。

The nub of the matter is that business is declining.
事情的实质是工商业在萎缩。

The nub of the problem is our poor export performance.
问题得关键是我们出口贸易方面太差。

We automatically throw the little nub of plastic upward.
接着，我们就自然而然地把那小小的按钮向上一摁

Coupling screws with collar nub and spacer for doubleties.
双轨枕用带环形螺母和垫圈的连接螺钉

Anastomotic cut leakage, nub leakage and obliquus syndrome caused by high pressure were prevented effectively.
有效防止高压造成的吻合口漏和残端漏及倾倒综合征等。