1、牵引轮
... steering wheel 转向轮 traction wheel 牵引轮；驱动轮 perpendicular 垂直 ...
wide slot traction wheel宽槽牵引轮
steel traction wheel s驱动钢轮
double slot traction wheel双槽牵引轮
traction force at wheel rim轮周牵引力
traction wheel rope-groove曳引轮绳槽
wheel traction motor车轮牵引马达
traction motor suspended on wheel-set轴悬