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Vehicle exhaust contains carbon monoxide, nitrogen oxides, hydrocarbons and lead compounds, forming vehicle emission pollution.

汽车废气中含有一氧化碳、氮氧化物、烃类和铅化物等，形成汽车废气污染。

Air pollution ; indoor ; Gas water heater ; Carbon monoxide ; Nitrogen oxides

空气污染；室内；燃气热水器；一氧化碳；氮氧化物

The mechanism of metal oxides and noble metal Pd introduced to TiO2 in order to get better properties was overall discussed.

通过表面贵金属Pd对TiO2基氧敏材料催化作用的分析，进一步认识了表面气体与材料电子交换的机理。

It is found that larger amounts of carbides such as M3C, MC and M2C and some compound inclusions of oxides and sulphides exist in the steel.

发现该耐火钢中析出的碳化物主要为M3C、MC和M2C相，同时还存在数量较多的氧化物和硫化物。

Metal oxides which are present on the catalyst surface are converted in a conditioning step into metal sulphides, which provide the hydrogenation component of the bi-functional catalyst.

出现在催化剂表面的金属氧化物在预处理阶段转化为金属硫化物，该硫化物提供双功能催化剂的加氢成份。

Only when the annealing temperature above 700K, the silicon suboxides convert to silicon oxides.

在该温度下反应表现为扩散控制机理。

Natural stabiliser for making cycle paths, rural paths, roads in restricted areas, Levostab 99 is a product that is environmentally friendly, stabilising and consolidating, made up of selected inorganic oxides and inert polymeric fibres.

用于铺设自行车道、乡间小路以及专用区域内道路的自然稳定系统Levostab 99是一款环境友好型产品，具有稳定和强化的功能，由精选无机氧化物和惰性聚合纤维制成。

Firstly, simultaneous removal of NO〓-C over mixture of metal oxides catalyst and carbon black was carried out with and without the assistanet of plasma. Secondly, catalysts loaded on γ-Al〓O〓 spherules were exposed to CA498 diesel exhausts to capture the PM, then the investigation into simultaneous removal of NO〓 and PM over catalyst with and without the assistant of plasma was conducted.

首先以复合金属氧化物催化剂和碳黑粉末的紧接触混合物为对象，进行等离子体／催化同时去除NO〓和碳黑的研究；然后以涂覆有催化剂的γ-Al〓O〓小球为载体，在实际柴油机尾气中挂烟，通过等离子体／催化作用，在模拟的富氧柴油机排气环境中，达到同时去除NO〓和微粒排放的目的。

In this thesis, nano-scale particles of metals, metal sulfides, selenides, oxides and nano-composites of metals/polymer, semiconductor sulfides/polymer have been successfully prepared by γ-ray irradiation technique in sorts of systems including water system, alcohol system, ethylenediamine system, microemulsion and emulsion system at room temperature and under ambient pressure. The possible formation mechanisms of nano-scale materials were suggested, and some factors of affecting the formation of nano-materials were studied.

本论文使用〓Co-γ射线辐射技术，在常温常压下分别于水体系、乙醇体系、乙二胺体系、微乳液和乳液体系中，成功地制备了纳米金属、硫化物、硒化物、氧化物以及金属／聚合物、半导体硫化物／聚合物纳米复合材料，并初步探讨了纳米材料形成的可能机理和影响因素。

Other filters and chemical "scrubbers" catch oxides of sulphur and nitrogen that would otherwise cause acid rain.

其他的过滤器以及化学&捕捉器&负责处理能够引起酸雨的硫氧化物和氮氧化物。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。