查询词典 pitting

Oxygen was one of the principal factors to keep passivity of the steel. CO2 was an accelerant for pitting.

氧是维持不锈钢保持纯态的主要因素之一，CO2则加速430不锈钢在NaCl溶液中产生孔蚀。

The pitting breakdown potential and pregnant time of pitting for pure nickel in neutral 3.5% NaCl solution under hydrostatic pressures of 0 MPa and 8 MPa at room temperatures were determined by means of electrochemical measure method.

利用电化学测量方法测量纯镍在3.5% NaCl溶液中，静水压力为0 MPa和8 MPa条件下的点蚀击破电位和孕育时间。

Then the theoretical value of pitting breakdown potential of pure nickel under different hydrostatic pressures was deduced,and the relevant pitting mechanism of pure nickel under hydrostatic pressure was discussed by stochastic analysis method.

分析得到纯镍在不同静水压力下点蚀击破电位的理论精确值，利用随机分析方法分析纯镍在静水压力下的点蚀机制。

By analysis for form and growing of metal pitting corrosion, film breaking arouses pitting corrosion with stress producing.

通过对金属点蚀形成及发展过程的分析表明，点蚀是由膜破裂引起的，而伴随膜破裂过程必然会产生应力波一声发射。

The pitting growth for 304 stainless steel in 0.5mol/L NaCl and its inhibition by piperidine were investigated by means of atomic absorption spectrometry and pitting current-time curve measurements under potentiostatic condition.

采用恒电位计时电流法研究了304不锈钢在0.5mol/L NaCl介质中孔蚀发展过程及缓蚀剂对孔蚀发展的抑制作用，同时用原子吸收光谱测定合金各组分元素的溶解量。

e-PTFE was implanted into the pitting area after subcuntaneous disjunction. Results: 15 cases were followed for about 3 and 6 momths after implant of e-PTFE, including cases with saddle nose, pitting deformity of orbit, congenital lip cleft with depressed soft tissue around pyriform opening, parbial defect of helix. In these cases, satisfaction rate is evaluated as high as 97.9%, unexpected tissue response was not shown in this clinical trail.Conclusion: Depended on this clinical trail, we believe local e-PTFE manufactured by Shanghai Suo-kang Medical Implants Co., Ltd.

由于e-PTFE的组织相容性好，在80年代初期一些发达国家已经应用于整形美容外科[1]，尤其应用于隆鼻术、面部凹陷畸形的整复、唇线增高、唇加厚、鼻唇沟过深的整形美容术、耳廓缺损等手术中，学者们认为e-PTFE排斥反应的发生率低，弹性和硬度与软组织相似，周围组织细胞能够长期进入移植物内，不形成纤维囊，在整形美容外科领域有重要的应用价值。

To investigate the pitting and metastable pitting rules of type 304 stainless steel, potentiodynamic polarization method was employed to study the behavior of metastable pitting and stable pitting on 304 stainless steel in sodium bromide solution and borate/phosphate buffered bromide solutions. The influence of the concentration of Br-、the pH value、the buffer capacity and general environmental factor to pitting potential and metastable pitting was studied as well.

为了更深入地了解304不锈钢的稳态及亚稳态孔蚀规律，本文采用动电位慢扫描法测得了304不锈钢的阳极极化曲线，研究了不锈钢在纯溴化钠溶液及含溴化钠的硼酸盐或磷酸盐缓冲溶液中的亚稳态孔蚀以及稳态孔蚀行为，分析了溴离子浓度、pH值、缓蚀性阴离子、以及缓冲容量和综合环境因子对孔蚀电位以及亚稳态孔蚀特征参数中的形核数目、峰值电流、生长寿命的影响。

In addition, the authors also investigated the mechanism of pitting failure of spraying weld tappets, the anti-pitting properties of surface spraying weld overlying strata and the influence of spraying weld technique on the anti-pitting property of tappet.

文章还就喷焊挺杆的点蚀失效机理、挺杆表面喷焊覆层的抗点蚀性能和喷焊工艺对挺杆抗点蚀性能的影响等进行了比较系统而深入的分析和讨论，指出这种喷焊上艺可以应用于斯太尔挺杆的国产化批量生产。

Through studying mechanism of drilling string failure in the action of interaction of cyclicstresses and corrosion, we find fracture source is accord with pitting corrosion inside surface ofdrilling string, crack from pitting corrosion lead to drilling string failure, the process of drillingstring failure is new drilling string → corrosion pit forming and crack initiation → corrosionfatigue crack propagation→piercement or fracture.

通过研究在钻柱交变应力和腐蚀的交互作用下的机理发现，腐蚀疲劳裂纹源与钻杆内壁蚀坑对应，蚀坑萌生裂纹造成钻柱失效，钻柱腐蚀疲劳破坏过程归结为：新钻杆—蚀坑形成及裂纹萌生—裂纹扩展—刺穿和断裂。

Pitting corrosion developed continuously by means of self-catalysis owing to the existing of passive-active cell in pitting corrosion hole. The Al2Cu phase was found on the grain boundary, and a poor Cu element area was observed nearby grain boundary.

在蚀孔内形成了钝化-活化原电池，使点蚀以自催化的方式不断发展。L401合金中α-Al相在吴占军西安理工大学硕士论文晶界析出A12Cu，在晶界附近产生贫铜区。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。