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Stem corrosion problem is to be paid more attention to the problem of accumulated rich production experience, often by nitriding, boride, chromium, nickel and other surface treatment to improve its corrosion resistance, corrosion resistance and wear abrasion performance.

阀杆防腐问题是被人们所重视的问题,积累了丰富的生产经验,常采用渗氮、渗硼、镀铬、镀镍等表面处理工艺,提高它的耐蚀性,气动控制阀耐蚀性和耐磨擦伤性能。

This kind of product has good characters of causticity resistance, wear resistance and oxidation resistance under high temperature, good air sealing and long using life.

可用于冶金、化工、医药、食品、耐蚀、汽车、机械等行业的密封装置和滑动装置,该产品具有耐蚀、耐磨、抗高温氧化等性能特点,气密性好、寿命长。

The results of XPS show the main composition of tin sludge is stannic oxide,so is the composition of smudge.

通过对表征镀层耐蚀性的合金电偶电流值及酸洗时滞的测试发现,随着锡泥投入量的增加,镀层的耐蚀性下降,且两者之间有很好的对应关系。

Experimental results revealed that triethanolamine has remarkable effect on arc restraining,which ...

实验结果表明:三乙醇胺可以有效抑制火花放电,增加膜层的厚度,使表面孔隙变小,提高表面光洁度;当三乙醇胺浓度为30g.dm-3时,膜层耐蚀性能最好;在阳极氧化过程中,三乙醇胺化学吸附于镁合金表面,从而改变微弧氧化过程中氧气气泡在镁合金表面的吸附强度和氧气气泡的大小,降低了微弧氧化陶瓷层孔隙率,提高了阳极氧化膜的致密性和耐蚀性。

Chromium debases the corrosion rate of steel in seawater at initial stage.

含铬低合金钢在海水中短期浸泡的耐蚀性比碳钢好,长期浸泡的耐蚀性比碳钢差。

Corrosion resistance of the deposits in simulated vulcanized gases was measured, and effect of thermal treatment on corrosion resistance of the.

研究了镀层在模拟硫化气氛中的耐蚀性及热处理对镀层耐蚀性的影响。

It also was studied to increase the corrosion resistance of blue-white passivation film of zinc plating on the premise of not improving the chromium content in plating.

介绍了如何提高镀锌低铬蓝白钝化的耐蚀性能,探讨了在不提高钝化膜含铬量的前提下,增加镀锌层蓝白钝化的耐蚀性能。

That is to say, the surface of the ferritic stainless steel is a lager of poor chromium and rich silicon.

贫铬层的存在大大降低了该钢种的耐蚀性,且使其表面光泽度变差〔1〕,难应用于对耐蚀和美观要求较高的场合。

The results show that, the Fick's second law based on corrosion environment should be presented; the linear isotherm of chloride binding is appropriate in concrete structures; the amounts of bound chloride in tide range area and air environment is 0.11~0.37 times of free chloride; the diffusion coefficient is 1/3 to the concrete without RAM and the effect is the best when the RAM ratio is about 15%.

研究表明:Fick第二定律仍需进一步改善,有必要根据不同侵蚀环境建立不同的侵蚀模型;用线性结合理论描述实际混凝土结构中的氯离子结合基本适用;潮差区及以空气中氯离子侵蚀为主的混凝土结构,结合氯离子占自由氯离子的相对值大致在0.11~0.37之间;掺加海水耐蚀剂混凝土的氯离子扩散系数大致可降为原来的1/3;海水耐蚀剂含量在15%左右时其提高混凝土抗氯离子渗透性能的效果最明显。

The results show that, the Ficks second law based on corrosion environment should be presented; the linear isotherm of chloride binding is appropriate in concrete structures; the amounts of bound chloride in tide range area and air environment is 0.11~0.37 times of free chloride; the diffusion coefficient is 1/3 to the concrete without RAM and the effect is the best when the RAM ratio is about 15%.

研究表明:Fick第二定律仍需进一步改善,有必要根据不同侵蚀环境建立不同的侵蚀模型;用线性结合理论描述实际混凝土结构中的氯离子结合基本适用;潮差区及以空气中氯离子侵蚀为主的混凝土结构,结合氯离子占自由氯离子的相对值大致在0.11~0.37之间;掺加海水耐蚀剂混凝土的氯离子扩散系数大致可降为原来的1/3;海水耐蚀剂含量在15%左右时其提高混凝土抗氯离子渗透性能的效果最明显。

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推荐网络例句

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。