Guide frame, tension sleeve and twisting copper sheathing are lubricated once per shift.

导向架和箍圈、扭转铜套，以上各点每班注油一次。

youdao

Guide frame, tension sleeve and twisting copper sheathing are lubricated once per shift.

导向架和箍圈、扭转铜套，以上各点每班注油一次。

youdao