查询词典 dioxide

When the wastewater's COD was 1533 mg/L, the optimum pH value was 1.2, the dosage of chlorine dioxide was 1500 mg/L after reacting for 60 min and the COD removal efficiency and the decolor efficiency were 45.3% and 92.5%, respectively.

二氧化氯化学氧化处理COD为1 533mg/L的萘酚绿废水，在最佳pH值为1.2，二氧化氯投加量为1 500 mg/L，反应时间60 min条件下，COD去除率和脱色率分别为45.3%和92.5%。

The decoloration of the six dye was studied in titanium dioxide which was prepared by hydrolysis methods.

经XRD对三种方法制得粉体进行了表征，讨论了三种方法的优缺点。

For instance, when dead trees decompose, they release the greenhouse gas carbon dioxide into the atmosphere.

例如，当死树分解，它们释放的温室气体二氧化碳排放到大气中。

It has far more influence than carbon dioxide on the greenhouse effect, approximately 300 times of the later one, and it takes about 120 years to decomposite.

一氧化碳的温室效果是二氧化碳的300倍，在大气中完全分解需要120年。

The results showed that in the roasting process of the molybdenite, the manganese dioxide could not only have good function of sulfur fixation, but also lower roasting temperature obviously and promote the oxidation decompound of molybdenum disulfide.

结果表明，二氧化锰在辉钼矿焙烧过程中，不仅能起到良好的固硫作用，而且能显著降低焙烧温度，促进辉钼矿的氧化分解。

In fact there are many factors threaten the existence of human, such as: forest demolishment, soil deserted, the destroy of ozonosphere, the increasement of ultraviolet radiation; global wcermerth and the raise of sea level caused by carbon dioxide and so on.

事实上，森林毁坏，水土流失，土地沙漠化，臭氧层的破坏，二氧化碳等气体增多，酸雨蔓延，水生生态破坏，水污染和水枯竭，物种灭绝等等，使全人类面临来自海、陆、空全方位环境退化的威胁。

China's sulfur dioxide and nitrogen oxides governance started very late, so far still in the exploratory stage, some power plant flue gas desulfurization denitration device most of Europe, the United States, Japan, the introduction of technology, or experimental, and equipment to deal with flue gas is very small, not yet ripe.

摘要我国对二氧化硫和氮氧化物的治理方面起步很晚，至今还处于摸索阶段，国内一些电厂的烟气脱硫脱硝装置大部分欧洲、美国、日本引进的技术，或者是试验性的，且设备处理的烟气量很小，还不成熟。

There are greater differences between the absorbing dust、sulfur dioxide and heavy metal capability of different types of trees. Synthetically Considering the purification function on the air pollution of trees, can divide the trees into : The first kind of comprehensive absorbability to the air pollution is relatively strong, pagoda tree, Apple, China Savin, Poplar; Second comprehensive absorbability in air pollution strong, such as Deodar Cedar, purple leaf Li, Glossy Privet; The third kind of comprehensive absorbability to the air pollution is medium-sized, such as the cedar , Pear , Evergreen Euonymus , peach, apricot, Huashan pine.

综合考虑植物对环境的净化作用，可将试验段生态防护林带的组成树种分为三类：第一类对环境净化能力很强，如圆柏、国槐、杨树、苹果等；第二类对环境净化能力强，如雪松、大叶女贞、紫叶李等；第三类对环境净化能力中等，如华山松、梨、杏、桃、黄杨等。

The B. light touches the intermediary is one catalyst, itself does not consume, the essential component is a nanometer carbon dioxide (TI02), under the illumination, Shui who the light touches in the intermediary union air He the oxygen forms the strong oxidized in the surface oxyhydrogen free radical, can decompose in the air the noxious gas and the bacterium, and releases C02 and the water, achieves the sterilization, the air purification, to deodorize.

B。 光触媒是一种催化剂，本身并不消耗，主要成份是纳米二氧化碳（ TI02），在光照下，光触媒结合空气中的水和氧气在表面形成强氧化性的氢氧自由基，能分解在空气中的有害气体和细菌，并释放出 C02和水、达到杀菌、空气净化、除臭。

Light touches the intermediary is one catalyst, itself does not consume, the essential component is a nanometer carbon dioxide (TI02), under the illumination, Shui who the light touches in the intermediary union air He the oxygen forms the strong oxidized in the surface oxyhydrogen free radical, can decompose in the air the noxious gas and the bacterium, and releases C02 and the water, achieves the sterilization, the air purification, to deodorize.

光触媒是一种催化剂，本身并不消耗，主要成份是纳米二氧化碳（TI02），在光照下，光触媒结合空气中的水和氧气在表面形成强氧化性的氢氧自由基，能分解在空气中的有害气体和细菌，并释放出C02和水、达到杀菌、空气净化、除臭。氢氧自由基释放时模拟人体气味，有效把蚊子引过来。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。