It is of significance to the researches and application of pits in foundation-pit retaining.
对软土地基坑中坑支护设计计算深度的取值进行了探讨。
Research on the Process of Micro-pits on the Cylinder Surface by CNC Machine Tool;
数控加工缸套工作表面微坑的方法研究
The Principle of Impacting to Manufacture Micro-Pits and Fixing on Parameter of the Micro-Pits Structure;
振动冲击微坑加工原理及微坑结构参数的确定
Fabrication method of micro-pits is proposed in this paper by using micro-ECM with multiple cylindrical micro-electrodes.
降低发动机的机械损失一直是研究热点,在摩擦副表面加工微坑,作为改善滑动摩擦的方法已引起了研究者的重视。
Review of heat transfer enhancement for dimpled surface;
凹坑强化传热的研究进展回顾
The application shows that the optimization can greatly reduce the dimple magnitude and improve the punching quality.
实践证明:优化后的凸模在很大程度上减小了凹坑的塌陷量,提高了产品质量。
Structural Feafure and Coal-controlling Effects in Zhangping Xukeng Coal Mine of Fujian;
福建省漳平市许坑煤矿区构造特征与控煤作用
The corrosion failure of Ni-P alloy plating was mainly caused by pitting and the process can be divided into initial stage of corrosion,propagation stage and penetration stage of pitting.
596μm;阻抗谱测量结果表明,Ni-P镀层的腐蚀行为主要为坑蚀破坏,可分为腐蚀初期、坑蚀发展和坑蚀深入三个阶段。
The result indicates that electrochemical corrosion,pitting,turbulence and erosion corrosion and their interaction are the main causes of the perforating and leaking of the tubes.
结果表明,空冷器管束在失效环境中发生了腐蚀减薄和穿孔泄漏的主要原因是电化学腐蚀、坑蚀、湍流腐蚀和冲蚀以及他们的交互作用引起的。
Effect of pitting corrosion on flexural performance of RC beams;
钢筋坑蚀对混凝土梁抗弯性能的影响
Also,the influences of the capillary structure to chloride ion permeability and reinforcement localized corrosion(namely pitting corrosion) are pointed out.
指出混凝土毛细孔结构对氯离子渗透和钢筋局部腐蚀(坑蚀)的影响。
Based on the results of other researchers on the corrosion rate of tensile reinforcement steel, moment resistance deterioration models of reinforced concrete girder bridges due to steel corrosion induced by chloride attack or concrete carbonation are developed with pitting corrosion being considered for chloride attack and average corrosion being considered for concrete carbonation.
基于国内外对氯离子侵蚀和混凝土碳化环境下钢筋锈蚀速率的最新研究成果,建立了混凝土构件在氯离子侵蚀下考虑坑蚀和在混凝土碳化下考虑平均锈蚀的弯曲抗力退化模型,用Monte Carlo方法和统计回归法编制了退化钢筋混凝土构件及系统的时变可靠度计算程序。