GB/T 39641-2020螺纹指示量规检测紧固螺纹方法标准
英文:Methods for gaging fastening screw threads by thread indicating gages GB/T 39641-2020介绍: 国家标准《螺纹指示量规检测紧固螺纹方法》由TC108(全...
英文:Methods for gaging fastening screw threads by thread indicating gages GB/T 39641-2020介绍: 国家标准《螺纹指示量规检测紧固螺纹方法》由TC108(全...