GB/T 24619-2021同步带传动G、H、R、S齿型曲线齿同步带与带轮标准
英文:Synchronous belt drives—Curvilinear profile systems G、H、R and S belts and pulleys GB/T 24619-2021介绍: 国家标准《同步带传动 G、H、R...
英文:Synchronous belt drives—Curvilinear profile systems G、H、R and S belts and pulleys GB/T 24619-2021介绍: 国家标准《同步带传动 G、H、R...