Adjust the direction of wire ring to keep the toy face in front.

可以调节方向金属挂圈，令配戴时玩具的正面向前方。

youdao

In this paper, the new measuring method of taper-face position ring is introduced.

介绍了一种新的锥面活塞环测量方法。

youdao

In this paper, the new measuring method of taper-face position ring is introduced.

介绍了一种新的锥面活塞环测量方法。

youdao