高温加热硬度达最大硬度以后保温硬度降低。
Hardness was decreased after maximum by high temperature heating.
重新加热硬化钢或硬化铸铁至某一温度，低于共析温度下，使硬度降低，韧度增加。
To reheat hardened steel or hardened cast iron to some temperature below the eutectoid temperature for the purpose of decreasing hardness and increasing toughness.
在感应淬火中，通过改变加热时间、加热功率和冷却速度可以改变淬硬层深度和硬度梯度。
The hardening case depth and hardness curve can be changed by adjusting heating time, heating power and cooling speed during induction hardening.
本文摘自作者关于电磁感应热处理的新书，全面地概述了齿轮淬火，包括零件的材料选取、硬度模式、线圈设计和加热方式等。
Extracted from the authors' new book on induction heating, this comprehensive overview of gear hardening includes sections on material selection, hardness patterns, coil design and heating modes.
并测定了加热温度对不同磷含量的非晶镍磷合金的组织结构和硬度的变化规律。
Effects of heating temperatures on the structure and the hardness of amorphous Ni-P alloys with different phosphorus contents hare also been studied.
研究了轧辊的预备热处理工艺对感应加热淬火组织的影响，感应加热温度和时间对组织和硬度的影响。
The effect of preheating treatment process of cold rolls on induction heat quenched structures and the effect of heating temperature and time on structure and hardness have been studied.
采用金相-硬度法研究了中碳钢（40钢）在加热和冷却时的组织转变。
To adopt the metallography hardness method to study microstructure transformation of medial carbon steel 40 being heated and cooled.
要遵循的合适步骤是将这种钢的一些小试件加热到不同的温度后淬火，再通过硬度试验或显微镜检查观测结果。
A good procedure to follow is to heat-quench a number of small specimens of the steel at various temperatures and observe the result, either by hardness testing or by microscopic examination.
实践结果表明采用工装保护电阻炉加热淬火后的零件硬度及强度满足技术要求。
The results show that the hardness and strength of the work piece after surface quenching protected by process tackling by means of air resistance furnace heating are satisfy.
遵循的一个较好的步骤为：将该钢的许多小试样分别在各种不同的温度下进行加热淬火并观察其试验结果，进行硬度试验或者金相检验。
A good procedure to follow is to heat-quench a number of small specimens of the steel at various temperatures and observe the results, either by hardness testing or by microscopic examination.
被加热到恰当的温度时，钢件的硬度及其它的性能会有显著的改变。
When the correct temperature is obtained, there will be a marked change in hardness and other properties.
摘要目的探讨预加热对4种光固化复合树脂显微硬度近期及远期的影响。
Abstract: Objective To determine both short-term and long-term effect of preheating on the microhardness of 4 composite resins.
结论预加热对此4种光固化复合树脂的显微硬度无影响。
Conclusion Preheating has no effect on microhardness of these 4 composite resins.
4种树脂经预加热后显微硬度与室温下的显微硬度无显著差异；
There was no significant difference in microhardness between the 4 composite resins at 3 different temperatures.
4种树脂经预加热后显微硬度与室温下的显微硬度无显著差异；
There was no significant difference in microhardness between the 4 composite resins at 3 different temperatures.
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