Thursday, January 12, 2023
纤维组织使材料性能具有明显的方向性,如纵向的强度和塑性远大于横向...
Sunday, September 11, 2022
简述排屑装置的作用?常用的排屑装置的形式有哪几种?各适用于什么场...
Sunday, September 11, 2022
Monday, September 12, 2022
实践证明,只要适当控制固溶体中溶质的数量,就能够显著提高金属材料...
Monday, September 12, 2022
Monday, September 12, 2022
合金元素提高钢的力学性能,主要体现在合金元素加入后使铁碳合金产生的()和弥散强化两个方面。A、畸变硬化B、淬火硬化C、固溶强化D、加工硬化...
Thursday, April 11, 2024
Sunday, September 11, 2022
Sunday, September 11, 2022
Sunday, August 13, 2023
Sunday, September 11, 2022
Wednesday, April 24, 2024
Thursday, August 3, 2023
()材密度小,强化处理后强度高,广泛应用于航空工业中。...
Sunday, September 11, 2022
Wednesday, April 24, 2024
Tuesday, December 13, 2022
晶粒度对力学性能影响的说法符合实际情况的是()。A、晶粒越细小,金属的强度、硬度越高B、晶粒越粗大,金属的强度、硬度越高C、晶粒越细小,金属的塑性、韧性越高D、晶粒越粗大,金属的塑性、韧性越高...
Monday, February 19, 2024
Wednesday, April 24, 2024
锯条的安装应注意()方向朝前。粗齿锯条适用于锯割()、()、()...
Sunday, September 11, 2022
Monday, September 12, 2022