After cold hardening, cold-resistance of 13 centipedegrass accession was improved.
13份假俭草材料经抗寒锻炼后抗寒性均有所改善。
参考来源 - 四川野生假俭草的抗寒性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
Aging treatment is performed for microalloyed steel for cold hardening bolt, which can stabilize its microstructure, enhance its strength and reduce its residual stress.
冷作强化非调质钢螺栓经时效处理可以稳定组织、提高强度、降低残余应力。
The new domestic - developed plastic mould steels include prehardening steel . age hardening steel, quenching-tempering steel, cold -forming steel, and anti - corrosion steel, etc.
国产新型塑料模具钢主要有预硬钢、时效硬化钢、淬火——回火钢、冷挤压成型模具钢、耐蚀钢等类型。
The paper introduces the present situation, Charac-teristice, principle and typical process flow of SO_2 gassing hardening cold box process in our country.
文章介绍了我国目前SO_2吹气硬化冷芯盒制芯的现状、特点、原理及典型的工艺流程；
应用推荐