Thursday, May 4, 2023
Thursday, April 18, 2024
问题:GB/T18254-2002的标准名称是什么?有多少个钢号?
Thursday, May 18, 2023
Tuesday, March 26, 2024
Thursday, December 1, 2022
Monday, October 9, 2023
Saturday, March 16, 2024
问题:贯彻标准只是标准化专职机构和标准化专职人员的事,这种说法对吗?
Wednesday, January 10, 2024
问题:什么叫重验?重验与复验有什么区别?两种试验的次数有无限制?
Tuesday, September 13, 2022
Saturday, July 8, 2023
问题:在转炉吹炼终点,钢中的余锰量是由钢液中的什么元素决定的?
Sunday, September 11, 2022
问题:35CrMo、30CrMnTi、40Mn2、42CrMo钢种属于哪类钢?执行什么标准?
Wednesday, January 10, 2024
Wednesday, August 16, 2023
Saturday, July 8, 2023
Wednesday, January 10, 2024
Thursday, April 18, 2024
Thursday, May 18, 2023
Thursday, April 18, 2024
Thursday, May 18, 2023
Sunday, September 11, 2022