Advance in Research of Tempering Secondary Hardening of Alloy Tool and Die Steel Fe-M-C Quenched Martensite;
合金工模具钢Fe-M-C淬火马氏体回火的二次硬化研究进展
Studing status on the secondary hardening phenomenon in ultra-high strength steels;
超高强度钢中二次硬化现象研究
Influence of alloying elements on secondary hardening of hot work die steel;
降Nb,V,Ni添加Mn对HD钢二次硬化的影响
The results show that Nb with high temperature quenching pluses sub-critical tempering can improve both the eutectic carbide distribution and its pattern,and results in the second hardening effect notably.
结果表明:加铌并配合高温淬火-亚临界回火工艺,可改善共晶碳化物的形态和分布,并产生明显的二次硬化。
And the forming of second hardening in the iron has been analyzed.
利用硬度、磁性测定和金相显微等方法 ,研究了淬火及回火温度对 15Cr- 2Mo - 1Cu型高铬铸铁的组织和性能的影响 ,并着重对高铬铸铁二次硬化的形成过程和原因进行了分析研究 。
Effect of austenitizing on microstructures and mechanical properties of 3Cr-3Mo-Nb secondary hardening steel;
奥氏体化对3Cr-3Mo-Nb二次硬化钢的组织和力学性能的影响
The microstructure and mechanical properties of a secondary hardening steel containing 3 % Cr and 3 % Mo in quenched and tempered condition were investigated.
研究了 3 Cr- 3 Mo二次硬化钢淬火回火后的组织和力学性能。
The carbides in the quenched and tempered microstructure of secondary hardening steel with a nominal composition of 25Cr3Mo3NiNb were studied by using TEM and electrochemical extraction methods.
利用TEM和萃取相分析方法,研究了25Cr3Mo3NiNb二次硬化钢淬火回火组织中的碳化物。
Tempering Structure and Properties in HSS andInvestigation on the Mechanism of Secondary Hardening
高速钢的回火组织与性能及二次硬化机制的探讨
Technology and Principle of Low Temperature Secondary Hardening for Organic Matter Cutting Tool Steel
有机物切割刀具用钢9CrV的低温二次硬化技术及原理
STUDY ON ABSORBENT PERFORMANCE OF XONOTLITE TO AMMONIA NITROGEN IN COKING WASTEWATER
硬硅钙石二次粒子对焦化废水氨氮的吸附性能
The UK is the biggest consumer of tropical hardwoods after Japan.
英国仅次于日本，是热带硬木的第二大使用国。
Performance Study of Rehardened MC3 Deep Hardening Layer Cold Work Roll;
MC3深淬硬层二次淬火冷轧工作辊使用性能研究
ethylene glycol monostearate
硬脂酸乙二醇酯（遮光剂，乳化剂，稳定剂）
Material properties of hardened lime-flyash-soil for rural highway
农村公路用硬化二灰土路面材料性能
Green colour, its hardness is only second to diamond and boron carbide. its hardness and brittleness are higher than C.
绿色，硬度仅次于碳化硼和金刚石，比黑碳化硅硬度和脆性略高。
Global Optimality Conditions of Quadratically Constrained Quadratic Programming Problems;
几类二次约束二次优化问题的全局最优性条件
Are There any Primary and Secondary Positions of Domestication and Foreignization in translation;
“归化”、“异化”有无第一、第二的主次之分
Research on Relationships between Business Secondary Incubation and High-Tech Industrialization
二次孵化与高技术产业化的关系研究
Experimental Study of Panaxadiol Saponins on Anti-atherosclerotic Effects
人参二醇组皂苷抗动脉粥样硬化作用实验研究
The Effective Mechanism of 2,3,5,4'-tetrahydroxystilbene-2-O-β-D-glucoside in Anti-atherosclerosis
二苯乙烯苷抗动脉粥样硬化的作用和机制
Catalytic Synthesis of Ethylene Glycol Stearate by Silicotungstic Acid Immobilized on Ion Exchange Resin
树脂固载硅钨酸催化合成乙二醇硬脂酸酯
Fabrication of Agglomerate-free ZnO Nanoparticles by Electrospraying and Subsequent Two-step Heat Treatment
电喷雾和二步热处理制备无硬团聚纳米氧化锌
B2 precipitate and aging hardening in Fe-Cu binary alloy
Fe-Cu二元合金中的B2析出相及时效硬化
Longitudinal acoustic phonon hardening in two-dimensional ferromagnetic system
二维铁磁系统的纵向声频支声子的硬化
Secondary Prevention on Coronary Heart Disease
冠状动脉粥样硬化性心脏病的二级预防