常见例句Mast guide bearings roller b- eearings and chain wheel bearings used for korklift mast needle bearings for printing machine double fullload cylindrical bearings 导轨轴承、叉车门架专用滚轮、链轮轴承、印刷机械专用滚论滚针轴承、双列满装圆柱滚子滚轮轴承、回转支承 返回 fullload