化学威胁需要不同的防护手段，因为化学品以雾或蒸气的形式存在，微粒过滤器对它们无效。
A chemical threat needs a different approach, because chemicals come as mists or vapors that are largely immune to particulate filtration.
接下来，被埋藏的有机物质中的一部分通过缓慢的化学反应转化为油雾雾珠和气泡。
Then some party of the organic materials must be transformed by slow chemical reactions to oil droplets and gas bubbles.
潮湿的盐雾环境和化学氧化膜的薄而软是引起腐蚀的主要原因。
It is mainly reason that wet and salt spray environment and thin film of chemical oxidation.
化学性能测试：材料的盐雾试验、不锈钢腐蚀试验等。
Chemical property testing: salt spray test of materials, corrosion test of stainless steel.
从金属雾的外观可以判断：外加的阴极极化电流能够抑制金属的电化学溶解，但是化学溶解作用继续发生。
It was found apparently from the metal fog that the applied cathodic polarization current can inhibit the electrochemical dissolution of aluminium but is not so effective on the chemical dissolution.
这种镜片有单光、变焦、太阳镜三种形式，使用时需要每周在镜面上喷洒一种化学溶剂，才能保持防雾表面持续有效。
The lenses are available in single vision, varifocal and sun-lens forms. They need to be sprayed with a chemical solution every week to keep the fog-repellent surface working.
当发生电化学溶解反应时，金属雾呈紫蓝色；而当化学溶解时，金属雾呈棕色。
As to the color of metal fog, the electrochemical dissolution reaction indicates blue-purple but the chemical dissolution indicates brown.
采用SEM、电化学、以及盐雾试验和湿热试验等其它方法对封孔材料与效果进行了评价。
The sealing materials and sealing efficiency was studied by means of SEM. electrochemical salt spay test and hot-humid test.
涂层金属耐腐蚀性的电化学测定方法简便，快速，比盐雾试验和大气曝露等常规方法提供较多信息。
The electrochemical determination of corrosion resistance of coated metals is more easy and simple compared to the salt fog test and atmosphere exposure and may provide more information.
很多化学家们通过使用除雾器而非使用洗涤塔来有效收集足够大的空气颗粒研究薄雾形式。
Many chemistries evolve in mist form, with airborne particle sizes that are large enough to be effectively collected through means of mist elimination rather than the use of a wet scrubber.
中性盐雾、电化学测试等腐蚀性能试验结果表明，钛盐钝化溶液所获得的蓝色钝化膜，其耐腐蚀性能更优于铬酸盐钝化膜。
Corrosion resistance of the blue passivation film obtained in titanium salt solution was superior to that of the chromate passivation.
通过盐雾试验、扫描电镜、电化学测试等手段，研究了该钝化膜的耐蚀性及耐蚀机理。
Corrosion resistance and mechanism were studied by salt spaying test, SEM and electrochemistry tests etc.
采用电化学、失重和盐雾实验对铝管表面硅烷稀土复合膜的耐蚀性进行考察。
Corrosion resistance of aluminum tube surface with silane-rare earth composite coating was studied by electrochemical means, weight loss and salt spray test respectively.
研究结果表明，单纯盐雾老化对涂层表面形貌和结构形态没有产生明显影响，因此，盐雾老化25周后涂层仍具有较高的电化学阻抗。
The surface topography and structure and morphology of the coating changed a little after 25 weeks salt fog exposure. As the result, the coating resistance hold high over the period of 25 weeks.
研究结果表明，单纯盐雾老化对涂层表面形貌和结构形态没有产生明显影响，因此，盐雾老化25周后涂层仍具有较高的电化学阻抗。
The surface topography and structure and morphology of the coating changed a little after 25 weeks salt fog exposure. As the result, the coating resistance hold high over the period of 25 weeks.
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