Since 1979 China has collected 24.7 billion yuan in pollutant discharge fees.1979年以来,全国共征收排污费247亿元.Knowledge of any given exposure to air pollutant mixtures is largely inadequate.关于任何特定的暴露于空气污染混合物中的知识,都是极为欠缺的.We will dis...
This chapter describes methods of estimating airborne pollutant concentration distrubutions associated with various emission sources.本章论述几种有关各种排放源的大气污染物浓度分布的估算方法.A pre - dicing method for calculating the distribution of ...
Years of dislike boiled over and blows were exchanged.多年的厌恶之情终于爆发，双方拳脚相加。Onions can be boiled and pulped to a puree.洋葱可以煮一下打成糊。Check every 20 minutes that the water has not boiled away.每过20分钟检查一下以防水烧干。...
由于幼虫对药物有免疫力，因此必须经常喷药。Because of the immunity of the immature insects, it'simportant to spray regularly.成人往往对风疹有免疫力。Adults are often immune to German measles.新来的人对这一疾病在当地的几种类型缺乏免疫力.The newcomers lacked immunity again...
Ru is comprised of bioactive protein and polypeptide which is extracted from colostrum.乳珍是从母牛的初乳中提炼的生物活性蛋白及多肽.Starfish contains different types of bioactive materials, such as proteins, enzymes, steroidal glycosides , ga...
Uses: as the raw material of manufacturing europium oxide.用途: 用作氧化铕的原料.Europium and terbium rare earth complexes with tetracarboxylic acid were successfully prepared in aqueous solution.摘要在水溶液中合成了铕和试的四元羧酸稀土配合物.The comple...