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- The high concentration of carbon oxide and hydrogen chloride produced by LPG is 80 per cent less than that produced by a petrol engine. 液化石油气所产生的高关注的碳氧化物和氢氧化物，比汽油引擎产生的还少百分之80。
- Later,the semi-decay of temperature,humidity and the concentration of carbon dioxide will be 0.25 hour,1 hour and 3 hours,respectively. 此后，温度、湿度、二氧化碳浓度的半衰期分别为0.;25小时，1小时和3小时。
- Later, the semi-decay of temperature, humidity and the concentration of carbon dioxide will be 0.25 hour, 1 hour and 3 hours, respectively. 此后，温度、湿度、二氧化碳浓度的半衰期分别为0.;25小时，1小时和3小时。
- Whet her that boom will happen quickly enough to stopthe concentration of carbon dioxide in the atmosphere reaching dangerous levels is moot. 这场盛筵能否尽快开场以阻止大气中二氧化碳浓度高到危险水平还在讨论中。
- According to Greenpeace, an environmental NGO, Riau's peatlands have the highest concentration of carbon stored per hectare anywhere in the world. 根据非政府环保团体绿色和平组织（Greenpeace）统计，廖内省泥炭土每公顷储藏的碳成分居世界首位。
- Carbon monoxide reduces the oxygen carrying capacity of red blood cells. The health effects depend on the duration of exposure and the concentration of carbon monoxide inhaled. 一氧化碳会降低红血球的带氧能力,它对健康所造成的影响则视乎身体接触一氧化碳的时间长短,以及吸入一氧化碳的浓度。
- The steadily rising and essentially irreversible concentration of carbon dioxide in the earth's atmosphere causes it to trap increasing amounts of the heat radiated by the planet. 由于大气中的二氧化碳分子日益聚集，浓度越来越高，而且很难分解，他是地球热量滞留，无法散发，导致全球气候变暖。
- The experiment method of measuring concentration of carbon dioxide in flame and removing light-intensity in combustion are introduced, and the result obtained is comparably good. 介绍了利用TDLAS技术测量火焰中二氧化碳浓度的实验方法，并对消除燃烧中气体湍流造成光强波动的方法进行了研究，得到了较理想的结果。
- The net result is thus a reduction in the concentration of carbonate ions. 氢离子容易和碳酸盐离子结合，形成碳酸氢盐离子，最后导致碳酸盐离子浓度降低。
- There is a concentration of people in big cities. 大城市人口集中。
- The stick of carbon is often used in an electric arc lamp. 碳精棒常用于电弧灯。
- Having a ring composed exclusively of carbon atoms, as benzene. 碳环的有一个仅由碳原子组成的环的，如苯
- The results of EDS and TEM analysis showed that the amorphous ferric oxide was uniformly dispersed on the surface of carbon black and the concentration of ferric oxide on the surface of CB reached 40%(by weight). EDS和TEM分析结果表明,铁/炭黑复合材料中无定形氧化铁在炭黑表面的含量可达40%25,且分散均匀。
- A radioactive isotope of carbon, especially carbon 14. 放射性碳碳的一种放射性同位素，尤指碳14。
- When iron which is unsaturated with respect to carbon is heated in a bed of coke, the concentration of the carbon near the surface is increased by inward diffusion of carbon atoms. 当一块含有不饱和碳的铁放在焦炭床上加热的时候，铁表面的碳含量就会由于内部碳原子的扩散而提高。
- Effect of different concentration of carbonates and bicarbonates treatment on black spot and blue mold of postharvest Yali pear was studied. 对不同浓度碳酸盐和碳酸氢盐处理对鸭梨采后黑斑病和青霉病的影响进行了研究。
- Carbon dioxide consists of carbon and oxygen. 二氧化碳是由碳和氧组成的。
- In 1955, Keeling devised an instrument that could measure concentrations of carbon dioxide in all kinds of environments, from sooty city rooftops to pristine wilderness forests. 1955年，基林设计了一台可以用来测量任何环境中的二氧化碳含量的机器，不管是煤烟熏黑的城市屋顶，还是原始蛮荒的森林。
- What is the concentration of salt in sea water? 海水中盐的含量是多少?
- Both of the substances are not made up of carbon . 这两种物质并非都由碳组成。
