????????????????????????????? (Bearing) ?????????? (Bearings) ???????????????????????????????????????? ?????????????? ??? ???????????????????????????????????????????????????????????????????? ????????? ????????????????????????????????????????????????????????????????????????????????? ??????????????????????????????
หน้าที่และการใช้งานตลับลูกปืน (Bearing)
????????????????????????????? (Bearing) ?????????? (Bearings) ???????????????????????????????????????? ?????????????? ??? ???????????????????????????????????????????????????????????????????? ????????? ????????????????????????????????????????????????????????????????????????????????? ??????????????????????????????