Ozone is formed from photochemical reaction between nitrogen oxides and volatile organic compounds , which are predominantly pollutants from motor vehicles and industries 臭氧是由主要是排放自车辆及工厂的氮氧化合物及挥发性有机化合物在光化学反应下形成的。
Ozone is formed from photochemical reaction between nitrogen oxides and volatile organic compounds , which are predominantly pollutants from motor vehicles and industries 臭氧是由主要是排放自车辆及工厂的氮氧化合物及挥发性有机化合物在光化学反应下形成的。
The smog that we see is the product of a series of complex photochemical reactions among air pollutants from different sources under strong sunlight 不同污染源所排放到大气中的污染物,在猛烈的阳光下会产生光化学作用,经一连串复杂的化学反应后,会形成我们看到的烟雾。
Ozone in the ambient air is not directly emitted from any source but is formed under photochemical reaction between nitrogen oxides ( nox ) and volatile organic compounds ( voc ) under sunlight (二)室外的臭氧并非直接来自污染源头,而是因氮氧化物与挥发性有机化合物在阳光下发生光合化学反应而形成的。
Short excited state lifetime and low activation energy for reactions in the excited states leave little room for manipulating the diastereomeric transition state when the photochemical reactions occur in solution 最新的研究表明,采用含手性空间或经手性修饰的微环境可以使光化学反应的立体选择性大大提高。
The latest progress of asymmetric photochemical reactions revealed that the enantioselectivity in photochemical reactions could be achieved when the reactions take place in chiral environments , which will be reviewed in this articles 本文针对这一热点问题,综述在微反应器中进行不对称光化学反应的研究进展。
After treated for 100 days , f0 / tchl of psii of one , two and three years old seedlings were 1 . 6359 , 1 . 2938 , 1 . 8250 tines of the control respectively , which showed that the energy did not engage in photochemical reaction increased 熏气处理100天以后,一、 h和三年生苗木的光合速率分别是对照的68 96 、 47 97和68 76 。
The long period of stable atmosphere was joined during daytime by strong sunlight that promoted photochemical reactions of the pollutants accumulated in the air to form ozone and the situation was aggravated 除上述长时间持续的大气现象外,日间强烈的阳光亦促使空气中累积的污染物产生光化学反应,形成臭氧,令空气污染更为严重。
The occasional increase in ozone level over tung chung is not caused by pollutants originating from tung chung or the neighbouring areas , but arises from the photochemical reactions over the pearl river delta ( prd ) region (二)东涌的臭氧浓度偶然高升不是因为来自东涌或是东涌邻近地方的污染物,而是受到珠江三角洲地区经光化学效应所产生的臭氧影响。
A new process for synthesis of 7 - dhc based on cholesterol and the innovation technology for synthesis of vitamin d3 by photochemical reaction have been developed by the technical institute of physics and chemistry of the chinese academy of sciences , and the process has been industrialized 中国科学院理化技术研究所开发了一条从胆固醇合成7 - dhc的新路线,提出了一条光化学合成维生素d3的创新技术路线,并已经转让实施。