According to reports, the distribution of various types of underground Great Wall of granite, rock hardness is twice as common.
据介绍，长城地下分布着各类花岗岩，硬度是普通岩石的一倍。
An analytical function for describing hardness distribution in round section of quenched steel, known as U-curve, has been established.
建立了描述淬火钢圆形截面硬度分布曲线——U曲线的解析函数表达式。
The result showed that the centrifugal casting made the WC particles appear gradient distribution, the hardness of composites displayed gradual lower inward, and the transition zone was strengthened.
结果表明，离心铸造使WC颗粒呈梯度分布，硬度由表及里呈现逐渐降低的趋势，过渡区得到强化；
This paper deals with the technique of laser cladding on contact surface of gears, micro hardness distribution, microstructure and properties of cladding and transition layer.
研究齿轮齿面激光熔覆粉末合金的工艺、显微硬度分布、熔覆层及过渡层等的金相组织及性能。
The microstructure of aluminized layer, hardness distribution and microstructure of internal oxidation layer were investigated.
对渗铝层的显微组织、内氧化层的硬度分布及显微组织进行了初步分析。
Authors suggest the linear relationship between the anti-abrasion parameters consisting of the amount and distribution of carbides, abrasive surface hardness and the abrasion resistance in this paper.
本文还提出了由碳化物数量、分布、磨损面硬度等因素构成的抗磨参数与相对耐磨性的线性关系。
The maximum hardness of the cladding is HV0.21000, and appears graded distribution.
熔覆层显微硬度高达hv0.21000，且呈梯度分布。
The result showed that there was obvious gradient in the distribution of the hardness and microstructure of the composite layer.
研究结果表明，复合材料层的硬度及显微组织分布均存在明显的梯度。
Effect of nitrogen and ammonia content on the nitriding rate, the microstructure, nitrogen concentration and hardness distribution of the nitriding case were studied.
研究氨气和氮气混合气氛的成分对渗氮速率的影响，测定了渗氮层的显微组织、渗氮层氮浓度分布及有关力学性能。
The effect of rare-earth elements, RE content, temperature and time on the penetrated depth, surface hardness and its distribution was investigated.
研究了稀土及稀土加入量、共渗温度、共渗时间对共渗层厚度、表面硬度及其分布的影响。
The results show that, by the scanning method, we may obtain well-distributed hardness and approximately ideal distribution of hardened layer on gear surface.
采用该工艺，可得到均匀的齿面硬度和较为理想的齿面硬化层分布状态。
It is found that adding vanadium can refine the high-chromium cast iron matrix, change the carbide morphology and distribution, improve the hardness and wear resistance of high chromium cast iron.
结果表明，钒的加入可显著细化高铬铸铁的基体组织，改变了碳化物的形态及分布，提高了高铬铸铁硬度及耐磨性能。
The V-EPC cast-in process was used to prepare the cast iron-based particles -containing composite. The distribution characteristics of the hardness and microstructure of the composite was studied.
采用V - E PC铸渗工艺制备铁基颗粒复合材料，并对复合材料硬度及显微组织分布特征进行了研究。
The mesophase did not appear. As the hardening effect and the thermal effect, hardness distribution near the interface of titanium and aluminum are different.
由于爆炸硬化和爆炸热效应的共同作用，界面附近钛板和铝板硬度分布规律不同。
The variation of the composite hardness depends on the distribution of the particles.
颗粒的分布决定了硬度值的分布变化。
The results show that the wear resistance of the arc spraying coatings depends mainly on the phases distribution in the coating. the relation with hardness of coating is not too great.
结果表明，涂层的耐磨性主要取决于涂层中的相分布，而与涂层硬度的关系不是太大。
The results indicated that the tempered sorbite was the optimum microstructure, the inhomogeneous distribution of micro hardness affected markedly the finish quality of the steel surface.
结果表明：回火索氏体是最佳的组织形态；微观硬度的不均匀性显著影响钢的表面加工质量。
The hardness distribution without obviously declining gradient in one range of the hardened layer produced by plasma quenching is rather different from that by conventional quenching.
等离子表面淬火硬化层的硬度分布，在某一区域内无明显的硬度梯度，这与常规淬火方法的结果不太一样。
The results show that the distribution of macro-hardness presents gradient change, the subsurface layer's hardness is highest, its is 542 HV.
结果表明：渗层到基体的显微硬度呈梯度变化，最高硬度出现在亚表层，硬度为542HV ；
The effect of SST103 quenching medium on hardness distribution and cracking character of low chromium semi-steel were studied.
利用冲击疲劳试验 ，研究了稀土变质及热处理对低铬半钢抗冲击疲劳性能的影响。
The effect of SST103 quenching medium on hardness distribution and cracking character of low chromium semi-steel were studied.
利用冲击疲劳试验 ，研究了稀土变质及热处理对低铬半钢抗冲击疲劳性能的影响。
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