
Belt drives; grooved pulleys for joined narrow V-belts; groove sections 9J, 15J, 20J and 25J (effective system)
出版:International Organization for Standardization

專家解讀視頻
Belt drives; grooved pulleys for joined narrow V-belts; groove sections 9J, 15J, 20J and 25J (effective system)
出版:International Organization for Standardization
專家解讀視頻