1) secondary normalizing
二次正火
1.
The results show that secondary normalizing can remove the wustite structure and make grain refining.
通过对几种细化晶粒方法的比较,提出采用二次正火可细化晶粒并消除魏氏组织。
2) double normalizing
两次正火
1.
The processes of double normalizing had been studied in this paper to increase the low temperature toughness of 40Mn2 steel used for seamless cylinder.
用两次正火工艺提高高压无缝气瓶用４０Ｍｎ２钢的低温韧性，分析了晶粒、带状组织等组织变化与低温韧性之间的关系。
3) double quenching
二次淬火
1.
Heat treatment tests of normalizing,quenching and temperature tempering,double quenching are carried on the material ZG25Mn for the axle box base of electric locomotive.
对机车抱轴承箱材料ZG2 5Mn进行了正火、调质、二次淬火的热处理工艺试验 ,比较分析了不同工艺的金相组织和机械性能 ,阐述了二次淬火的强韧化机理 ,认为二次淬火可以改善组织 ,提高强度与韧性。
2.
Through study about the heat treatment process of high-powered marine diesel engine cam, cam\'s technology of carburizing and quenching was optimized, adopting the double quenching process after carburizing, and taking alkaline bath as the quenching medium, the influences of new technology on mechanical properties and microstrcture were studied.
通过对大功率船用柴油机凸轮热处理工艺的研究,对凸轮渗碳淬火工艺进行优化,渗碳后采用二次淬火工艺,碱浴作淬火介质,研究新工艺对凸轮力学性能和显微组织的影响。
4) Secondary annealing
二次退火
1.
Effect of secondary annealing on Al/Ti/n-GaN/Si ohmic contacts;
二次退火对Al/Ti/n-GaN/Si欧姆接触的影响
6) double temper
二次火回
补充资料：正次
1.语法术语。在名词修饰名词的偏正短语中，某中心词所居的位次。同"偏次"相对。
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参考词条