An oxidation catalyst deposited on a filter substrate for the removal of CO, hydrocarbons, and particulate matter, such as soot, from an exhaust stream wherein the oxidation catalyst is formed from a platinum group metal supported on a refractory oxide, tin oxide, and a zeolite.
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Usually a dark or black pigment such as soot was introduced into the pricked skin.
一般是深色或黑色颜料，比如把烟灰搓进刺破的皮肤中。
This was perhaps due simply to luck with the weather, or the cooling influence of aerosol particles, such as soot, that blocks warming.
这可能只是由于幸运地遇到了好天气，或者煤灰一类的烟尘造成的冷却作用阻碍了变暖。
In the manufacturing process of industry, the exhaust gas contain some harmful substance such as soot, sulfide, nitration, oil, and so on.
工业生产排出的废气中含有大量的烟尘、硫化物、硝化物、油类等有害物质。
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