The phases of corrosion products on underground steel tube and their changes with depth of rust layer were analysed using Mossbauer effect, X - ray diffraction and proton X -ray fluorescence analysis.
使用穆斯堡尔效应、x射线衍射分析及质子x射线荧光分析法，分析了地下钢管腐蚀产物的相态及其随锈层深度的变化。
The effects of corrosion rate, defect depth, thickness of pipe and operation pressure on pipeline reliability were investigated with this model.
利用这一模型，研究了腐蚀速率、缺陷深度、管道壁厚和工作压力等因素对管线可靠性的影响。
The results show that the corrosive depth as a geometrical target of the corrosive degree can be used as the composite target for evaluating the corrosion degree of cement stone.
结果表明：腐蚀深度作为评价腐蚀程度的几何指标可用于综合评价水泥石的腐蚀程度。
And the reasonability of estimating the corrosional depth of steel, by using Faraday's Law and under accelerated corrosion conditions, is discussed.
探讨了在快速锈蚀条件下，按法拉第定律的电化学锈蚀控制方程来估算钢筋锈蚀深度的合理性。
The durability status of concrete structures in Chongqing is discussed based on the analysis of the depth of concrete carbonization and the thickness of concrete cover and reinforcement corrosion.
从混凝土碳化深度、保护层厚度和钢筋锈蚀三方面调查研究了重庆地区混凝土结构耐久性的现状。
Make use of available experimental data of LY12CZ aluminum alloy, a probabilistic neural network was developed to classify the maximum corrosion depth ranges based on the material failure mode.
运用LY12CZ的腐蚀实验数据，根据高强铝合金的失效模式（点蚀-晶间腐蚀-剥蚀），建立了对最大腐蚀深度分类的概率神经网络模型，输出结果与实验数据比较吻合。
Since the physical and chemical properties of ceramic fragments are very stable and can not be broken down, corrosion, and even buried depth for a thousand years but not changed.
由于陶瓷碎片的物理性能和化学性能都十分稳定，不能被分解、腐蚀，甚至打碎了后填埋上千年也没有什么改变。
Second-ranking carbonization depth anticorrosive wood from Europe, ten years of service records. The famous opera house in Lyon in 1997 by the whole carbonization corrosion timberwork.
深度炭化防腐木源自欧洲，有十年的使用记录。著名的里昂歌剧院就在1997年采用了全炭化防腐木结构。
The prediction results show that the relative errors predicted are less than the given references, and is a better model to predict the corrosion rate and corrosion depth of natural gas pipelines.
预测结果表明，该模型的预测结果误差小，可以用于现场管道的腐蚀预测，是管道腐蚀预测的一种新方法。
The factors influencing the corrosion depth including the porous volume of concrete, thickness of concrete cover, diameter of rebar and the corrosion expansion rate are analyzed.
分析了影响混凝土保护层胀裂时钢筋锈蚀深度的各个因素，包括混凝土水泥石毛细孔的体积、混凝土保护层的厚度、钢筋直径和铁锈膨胀率。
With increasing the embedded depth of iron wire, the negative shift value of corrosion potential, chlorine ion concentration and corrosion rates reduced, but polarization resistance increased.
随铁丝埋入深度增加，电位负移量、氯离子浓度和腐蚀速度都减小、极化电阻增加。
However, researching of the high temperature corrosion is limited in engineering, more in-depth researching is lack about the corrosion mechanism and the course of reaction.
但是，目前人们对高温腐蚀的研究局限于工程实践的研究，对其腐蚀机理以及反应过程缺乏进一步深入的研究。
The regulation specifies the principles, contents, detailing and material requirements, design value of concrete cover depth, crack width limiting, additional anti-corrosion measures and test methods.
规定了混凝土结构耐久性设计的原则、内容、结构构造和材料选用基本要求、混凝土保护层厚度设计值、裂缝宽度限值等，并给出了防腐蚀附加措施及试验方法。
Heater leak occurs by direct reason of the stress corrosion cracking, while by other reasons of solidification cracking, small fusion depth of welding joint and non...
应力腐蚀裂纹是造成加热器泄漏的直接原因，结晶裂纹、焊缝熔深小及坡口底部未熔透也是加热器泄漏的原因。
8 times that of copper, the corrosion depth is reduced more 50%.
8倍，在硫酸、盐酸及氯化钠溶液中的腐蚀深度均比纯铜减少了50%以上。
8 times that of copper, the corrosion depth is reduced more 50%.
8倍，在硫酸、盐酸及氯化钠溶液中的腐蚀深度均比纯铜减少了50%以上。
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