腐蚀的

It has long been known that the poor corrosion resistance of brass in certain environment is due to the phenomenon of dezincification.

采用显微组织分析和脱锌腐蚀实验方法，研究了不同铋含量对黄铜的微观组织以及黄铜脱锌腐蚀性能的影响。

The corrosion stresses associated with a particular environment or corrosivity category represent one essential parameter governing the selection of protective paint systems.

腐蚀应力在特定的环境或者腐蚀种类下表现出来的一个基本参数决定了选择哪种防护体系。

The corrosive action of acid upon an etcher's metal plate.

腐蚀：蚀刻器的金属盘上的酸腐蚀

The results show that the naturally-aged 2195 alloy has the best intergranular and exfoliation corrosion resistance.

由于Li是一种非常活泼的元素，Al Li合金在潮湿和盐雾等环境中极易发生腐蚀，因此其腐蚀性能的研究显得尤为重要。

The results indicate that hydrogen ion and chloride ion can accelerate the corrosion of iron as increasing their concentrations.

结果表明，酸的浓度越增加，铁的腐蚀越容易；Cl对铁有腐蚀促进作用。

The erosion of hydrogen sulfide and the nature oxidation tendency of erosion products were studied at elevated temperature.

研究了高温条件下硫化氢的硫化腐蚀状况及腐蚀产物的自然氧化倾向性。

The results show that the highest yield strength and IGC resistance are obtained by 190 ℃/ 60 min retrogression and reaging. But when the alloy is treated near the lowest value of hardness curve of retrogression, the lowest IGC resistance is gotten by 190 ℃/4 min retrogression treatment.

结果表明：合金经190℃/60min回归和再时效处理，屈服强度最高，抗晶间腐蚀能力最好，具有最佳的综合性能；但合金在接近回归硬度曲线的谷值时，经190℃/4min回归处理，抗晶间腐蚀性能最差。

Ceramic cage has excellence performance as wear and corrosion resistance, high strength, lubrication and maintenance free when working. Adopting the ceramic cage, Ceramic bearing can be used in the most inclemency environments as corrosive, low temperature, high vacuum.

陶瓷制保持架具有耐磨损，高强度，耐腐蚀及自润滑的优点，采用陶瓷保持架制造的全陶瓷轴承可使用于极强腐蚀，超高低温及高真空等苛刻环境。

When the minority carrier life of PS decreases, the irradiative centers on surface of PS increase, which lead to decreasing of photoluminescence efficiency.

另外，原子力显微照片表明长时间的腐蚀使多孔硅表面层被化学腐蚀，从而降低了多孔硅表面的粗糙度。

Corrosion action slope cable used in cable-stayed bridge in different corrosion medium such as synthesis sea water, solution NaCl and simulation acid rain are studied by electrochemical method, for example, linear polarization, Tafel extrapolation and AC impedance method.

对此，本论文以人造海水、NaCl溶液、模拟酸雨作为腐蚀介质，针对不同类型的钢绞线，采用线性极化法、Tafel外推法和交流阻抗法等电化学方法研究斜拉桥拉索结构中钢绞线在不同介质中的腐蚀行为。

Shop assistant: Please check at the door.

店员：请您到门口柜台交费。

In the end, transportation of PAHs in the environmental matrix was preliminarily investigated and discussed according to PAHs data of soils and sediments from a certain region in Shanghai. The result indicated that there are two or more pathways on PAHs transportation in the environmental matrix.

最后，对上海特定地区内PAHs在环境介质中的迁移径途进行了分析讨论，结果表明上海市土壤和沉积物等环境介质中PAHs的迁移存在多种途径。