Sunday, January 14, 2024
Saturday, December 21, 2024
问题:如何安装刺刀管的内、外管?为什么要控制内外管的底都间隙?...
Saturday, January 25, 2025
问题:钢管冷弯后,对有冲击韧性要求的钢管,最大变形率大于()时要进行热处理。A、3%B、5%C、10%...
Saturday, December 21, 2024
Sunday, October 13, 2024
Tuesday, September 13, 2022
Friday, July 4, 2025
问题:试述轴与密封腔垂直度如何进行检查,釜用机械密封静环端面对轴线不垂直度偏差是如何规定的?...
Thursday, February 1, 2024
问题:螺纹连接预紧方法是怎样的?怎样进行螺纹连接的装配?...
Tuesday, September 13, 2022
Wednesday, June 28, 2023
Thursday, March 13, 2025
Thursday, March 13, 2025
Tuesday, September 13, 2022
Wednesday, June 5, 2024
Tuesday, September 13, 2022
问题:在什么情况下才考虑拆卸轴承?拆卸轴承应注意哪些事项?...
Sunday, June 22, 2025
Monday, June 10, 2024
问题:二氧化碳汽提塔密封面泄漏的主要原因有哪些?应如何检查处理?...
Tuesday, September 13, 2022
问题:大型化工用泵用环氧树脂粘接剂修补叶轮的操作顺序是什么?...
Sunday, January 21, 2024
Tuesday, April 15, 2025