In slow motion , rolling double fault slip and automatically clean contact 10a 慢动作双断滚滑式自动清洁的10a接点
Specification for bearings - airframe rolling double row , self aligning ball bearings in steel diameter series 2 . dimensions and loads 轴承规范.钢的2号直径系列机体双列自调心球轴承.尺寸和负荷
Specification for bearings - airframe rolling double row self aligning ball bearings in corrosion resisting steel diameter series 2 . dimensions and loads 轴承规范.耐蚀钢的2号直径系列机体双列自调心球轴承.尺寸和负荷