Together with practice, the paper shows how to control thermal crack in large volume concrete by the cause of formation of crack.
本文从分析大体积混凝土裂缝形成的原因入手，结合大型水池底板混凝土施工的工程实例，阐述大体积混凝土温度裂缝的控制。
The paper puts forward the corresponding measures for prevision of cracks from the study on crack formation mechanism.
该文从裂缝形成机理的研究，有针对性地提出了预防裂缝出现的相应措施。
Bearing parts in the process of hardening cooling by internal stress due to the formation of quenching cracks crack said.
轴承零件在淬火冷却过程中因内应力所形成的裂纹称淬火裂纹。
The study on crack types and their formation mechanisms of silver based contact materials are carried out according to the various currents and various contact closed forces.
根据不同电流等级及不同触头闭合压力，对银基触头材料裂纹类型及形成机理进行了分析研究。
The results show that metallurgical defect is the main reason leading to early formation of fatigue crack under normal working stress.
认为，该曲轴材料的冶金缺陷是导致疲劳裂纹在正常工作应力下过早形成的原因。
And formation of typical fatigue striation on fatigue crack steady propagation is difficult.
其疲劳裂纹的稳定扩展也较难形成典型的疲劳条带。
Through analyzing the pressure records in hydraulic fracturing, we can gain the formation and the fluid characteristic parameters and then judge the geometrical shape of a crack.
对水力压裂来讲，这个系统就是通过对记录压力的分析，提取地层和液体特征，从而确定裂缝的几何形状。
The results showed that failure morphology was of typical contact fatigue characteristics, and two modes of fatigue crack formation worked.
结果表明，失效形貌呈典型的接触疲劳特征，两种疲劳裂纹形成模式同时存在。
Based on in-depth analysis of reflective crack formation mechanism, this paper gives reflective crack preventive and curative measures.
本文在深入分析反射裂缝形成机理的基础上，提出了反射裂缝的预防及治理措施。
It is thought that the treatment can release formation pollution and communicate crack which provides a liable basis for developing and exploiting at next step of this district.
认为酸化措施解除地层污染并沟通了地层的裂缝，为该地区的下步勘探开发提供了可靠依据。
In low temperature cleavage physical model, it is of Paramount importance to ascertain the nature of the critical event in the formation of a cleavage crack.
在低温解理断裂的物理模型中，最重要的是确定解理裂纹形成中的临界事件。
The crack formation of thermal shock fatigue is related to the nucleation, growth and join of microvoid.
热冲击疲劳裂纹的形成与微孔洞的形核、长大和连通有关。
The formation mechanism of thermal shock fatigue crack of cemented carbide YG10 was investigated.
研究了YG10硬质合金热冲击疲劳裂纹的形成机制。
The crack sensitivity of hypo-peritectic steel, its formation mechanism and factors are discussed, and on the analysis, the reasons and factors on longitudinal surface crack are found out.
本文从亚包晶钢的裂纹敏感性，表面纵裂形成及影响因素等方面进行讨论，初步阐述了亚包晶钢圆坯表面纵裂形成原因及各种因素对表面纵裂的影响。
The method and results of the study on formation condition for internal crack in continuous casting slab were reviewed.
评述了连铸坯内裂纹形成条件的研究方法和结果。
The effect of re modification and heat treatment on formation of thermal fatigue crack in low chromium wear-resistant cast iron was investigated.
研究了稀土变质及热处理对低铬耐磨铸铁热疲劳裂纹形成的影响。
During the fatigue process, the formation of the main crack expends most of the whole fatigue life, and once the main crack forms, the crack propagates rapidly and fractures immediately.
疲劳过程中主裂纹的形成消耗了大部分的疲劳寿命，一旦主裂纹形成就快速扩展瞬间断裂。
This is cotton quality and yield formation of key stage, continuous wet weather, affected cotton crack open bolls and pick, the bell also delayed the time to market showed.
眼下正是棉花品质和产量形成的关键阶段，持续阴雨天气，影响了棉花裂铃吐絮及采摘，也推迟了新棉的上市时间。
Production practice proof that the forging process can be used to control formation of inclusion crack effectively and improve internal quality greatly.
生产实践证明，采用该工艺可有效控制夹杂性裂纹的形成，提高锻件内部质量。
According to this, the formation mechanism on hot charging process crack of steel ingot is concluded, thus offering a theoretical basis for preventing hot charging process crack in production.
在此基础上分析了钢锭红送裂纹的形成机理，为生产中防止产生红送裂纹提供了理论依据。
Firstly, the paper analysed the formation mechanism of the fatigue crack in asphalt pavement with semi-rigid base.
首先，论文分析了半刚性基层沥青路面疲劳裂缝的形成机理。
For over-long reinforced concrete frame structure, temperature loading often leads to crack formation of the beams and plates.
对于超长钢筋混凝土框架结构，变温的作用常常导致混凝土梁和楼板的开裂。
The method and results of the study on formation condition for internal crack in continuous casting slab were re viewed.
评述了连铸坯内裂纹形成条件的研究方法和结果。
The effect of the shape of electrode tip on crack formation and sticking were investigated.
研究了电极端部形状对焊点产生裂纹及粘结的影响。
A finite element computer program for saturated soils was revised accordingly in order to be used in the analysis of crack formation and propagation upon drying on the clay surface.
相应的修改了饱和土的有限元程序，用于分析粘土表面干缩裂缝的形成过程。
The results show that the cracking of the tap valve is brittle crack, which is due to overheat to cause the formation of defects, such as coarse grains, Widmanstatten structure and porosity.
结果表明，水龙头阀体开裂是由于存在过热造成的晶粒粗大、魏氏组织、铸造疏松等缺陷引起的脆性开裂。
We analyse the formation Cause of longitudinal crack of the strip in double - roll strip continuous casting using metallographic technique and electron microprobe.
用金相技术结合电子探针对双辊薄带连铸带坯的纵裂纹成因进行了分析。
Based on the practical engineering in Yangtai region, analysis is made on the causes of formation of the non-loaded fatigue crack early in asphalt pavement, and given the preventions.
结合扬泰地区工程实例，分析了沥青路面两类早期非荷载疲劳裂缝产生的原因和开展形式，并提出工程防治措施。
Influence of Die Casting Process on Hot-crack and its formation mechanism of AM60B alloy are discussed.
分析了AM 60 B合金热裂纹形成的机制，讨论了压铸工艺对AM 60 B合金热裂纹的影响。
Influence of Die Casting Process on Hot-crack and its formation mechanism of AM60B alloy are discussed.
分析了AM 60 B合金热裂纹形成的机制，讨论了压铸工艺对AM 60 B合金热裂纹的影响。
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