surface pitting

The accurate calculation of stress field based on EHL theory and theory of elasticity showed that the shear stresses at surface in direction of 30 ° with rolling direction cause the pitting cracks and the tensile stresses accelerate the crack growth.

结果表明：预加拉应力使裂纹起源于表面的点蚀寿命缩短，与滚动方向成30°角的剪应力是引起点蚀的决定应力。

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Microsoft went after Apple by pitting its new Surface Pro 4 tablet and Cortana smart assistant against the iPad Pro and Siri.

微软公司研发了全新的Surface Pro4平板电脑和Cortana智能服务来对抗苹果的iPad Pro和Siri系统。

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Objective To seek the biological stuffing materials for repairing the pitting caused by soft tissue lesion or injury on the face or body surface.

目的寻找人面部或体表软组织病变或缺损造成凹陷的填充和修复材料。

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It is found that, on repeated impact force, the various of failure mode of the components include the surface crackle, surface plastic deformation, corrosive pitting and coat collapse, etc.

发现在反复多次冲击碰撞力作用下，覆层零件表现出表面裂纹、表面塑性变形、表面点蚀和覆层崩落等多种失效形式。

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Study on pitting corrosion behavior of titanium alloy surface with ion implantation

氮离子注入钛合金表面的耐点蚀性能研究

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Analysis of Gear Surface Pitting and Spalling of Fatigue in the Close Gear-driven

闭式齿轮传动齿面疲劳点蚀和剥落的分析

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When flow velocity reaches 2.62 m/ s, the local corrosion is pitting corrosion and the protective corrosion product film can not form on the test coupon surface at the temperature of 100 ℃ and the CO_2 pressure of 0.03 MPa.

在流体速度为2.62m/s的情况下，温度为100℃、CO2分压为0.03MPa时，发生的局部腐蚀主要为点蚀，试样表面未能形成保护性腐蚀产物膜；

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Pitting corrosion was found on the inner surface of 304L stainless steel pipes, which was exposed to nitrogen gas containing bromine ions.

通有含溴离子氮气的304L不锈钢管，经一段时期的使用后产生了严重点蚀。

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The pitting critical potential of the fresh surface is lower than that of the surface covered by passive film. At free-corrosion potential and anodic potential, the susceptibility to SCC was very low.

去膜表面发生点蚀的临界电位低于膜覆盖表面发生点蚀的临界电位。在自腐蚀电位和阳极电位条件下，SCC敏感性很低。

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There is corroded spot and pitting on the surface of all valves.

所有阀门表面上都有腐蚀斑痕和麻点.

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