GB/T 15902-2017输送带弹性伸长率和永久伸长率的测定及弹性模量的计算国家标准
英文:Conveyor belts—Determination of elastic and permanent elongation and calculation of elastic modulus GB/T 15902-2017介绍...
英文:Conveyor belts—Determination of elastic and permanent elongation and calculation of elastic modulus GB/T 15902-2017介绍...