腐蚀的

A modified etching model is proposed, in which the diffusion coefficient is a function of the temperature and concentration and the etching rate constant is a function of temperature.

在前人腐蚀模型基础上考虑扩散系数是浓度和温度的函数，腐蚀速率常数是温度的函数，得到了修正模型。

Compared with FeCl〓, the corrosiveness of PFC was weak and decrease with the increase of the basicity B.

研究了PFC的腐蚀特性，与氯化铁相比，PFC可有效降低铁盐的腐蚀能力。

Aluminium erodes easily in this step, so it has important significance to study corrosion and protection of aluminium .

铝在酸洗过程中容易腐蚀，因此研究铝的腐蚀与防护有重要意义。

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Corrosion mechanism of concrete exposed to bitterns containing Mg2+-Ca2+-Cl--SO42- was extended to bitterns containing Mg2+-Cl--SO42--CO32--HCO3-.

将混凝土的Mg2+-Ca2+-Cl--SO42-复合型腐蚀机理扩展到Mg2+-Cl--SO42--CO32--HCO3-复合型腐蚀机理。

Its comprehensive coverage focuses on corrosion of all metal/nonmetal alloy reactor components, including claddings, coatings, pressure vessels, piping, and fuel elements, etc.; and effects of radiation on corrosion mechanisms, rates, and control measures.

它的广泛报导集中在所有金属/有色金属反应堆部件，包括包层，涂层，压力容器，管道系统和燃料元素等腐蚀；腐蚀机制辐射作用，评价和管理措施。

It is a common way to alter the etching rate by changing the material of sacrificial layer, concentration of etchant, temperature or structure of sacrificial layer.

通过改变牺牲层材料、腐蚀液浓度、温度和牺牲层结构来改变腐蚀速率是常用的方法。

Subsequently, the crystal structure and type of iron sulphide changed gradually, there existed crannies in corrosion products, resulting the increase of corrosion rate.

根据其后期腐蚀速度变化和阻抗谱特征，有可能生物有机硫化物的存在加快了其腐蚀速度。

The corrosion testing of wire and welded joint of L401 alloys was tested in 3.5%NaCl solution. The mechanism of corrosion was studied .

在3。 5%的NaCl电解质水溶液中对L401线材及其接头进行腐蚀试验，分析了其腐蚀机理。

How to study the corrosive factors of media corrosion in oil and gas gathering pipelines under the condition of multiphase flow is discussed and mathematical models are established. The effects of media flow rate, oxygen content, pH, salinity, temperature, pressure of CO2 and water content on 20(superscript #) tubular goods are introduced.

讨论了在多相流条件下如何对油田集输管线介质进行腐蚀因素研究并建立数学模型，研究了集输管线介质流速、含氧量、pH值、矿化度、温度、二氧化碳分压、含水共7个因素对20材管材的腐蚀影响趋势。

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。