查询词典 acid precipitation

All the pollution is not acid rain, i.e., sulphuric and nitric acid dissolved in precipitation .

酸雨为含有硫酸和硝酸的雨，它并不是造成污染的唯一原因。

The resultant precipitation —— acid rain is a dilute mixture of sulphuric acid and nitric acid.

由此产生的沉降物——酸雨是稀释后的硫酸和氮酸的混合物。

There is acid rain in the precipitation of 98 cities, accounting for 91.6% of the cities in the Acid Rain Control Zone.

南方地区酸雨污染较重，酸雨控制区内90%以上的城市出现了酸雨。

The investigation results indicate that:(1) During the process of waste acid, based on the proposed result of air oxidation flocculent precipitation, arsenic in waste acid can be transformed to high-class white arsenic or arsenic acid copper product.

在前人研究结果的基础上，根据含砷污酸与含砷废渣中主要元素存在形态和性质提出了用空气氧化絮凝沉淀法从污酸制备砷酸铜和白砷新处理工艺；提出了铟生产过程中选择性硫化沉淀除砷，提出了含砷废渣对土壤影响的治理方案。

Then SAM precipitation was carried out by picric acid and SAM precipitated is higher than 90％. After butanone extraction, acetone precipitation and SAM sulfate or SAM double salt of sulfate and p-tosylate formation, the stable SAM salt was obtained.

结果表明，苦味酸是一种选择性较好的沉淀剂，沉淀步骤得率在90％以上，制备SAM的硫酸盐的总得率在60％以上，而硫酸对甲苯磺酸双盐的得率在50％以上，产物的纯度达到了95％以上，已经达到了国外同类产品的质量指标。

The experimental results indicate that oleic acid has inhibitory effect on the precipitation, and the inhibitory effect is more obvious with increasing addition of oleic acid. Specially, oleic acid of 1×10^(-5) mol/L would facilitate the agglomeration of gibbsite, oleic acid of 1×10^(-4) mol/L would inhibit the agglomeration of gibbsite.

结果表明：油酸对铝酸钠溶液的种分过程产生比较明显的抑制作用，油酸的添加量越大，抑制作用越明显；添加1×10^(-5) mol/L油酸时可促进附聚，添加1×10^(-4) mol/L油酸时抑制附聚。

The washout of precipitation is effective, 64% of total sulfate is scavenged by precipitation, in which 57% by graupel, it shows the importance of ice phase process in acid deposition.

降水对气溶胶的冲刷十分有效，占初始气溶胶总量的64％，其中固态降水占57％，说明了冰相过程在硫沉降中的重要性。

Methods:Fibrinogen was purified by precipitation from citrated plasma by saturated ammonium sulplvate.Fibrinogen-bound sialic acid levels with 22 controls and 113 liver patients were assayed by the thiobarbituric acid method.

应用饱和硫酸铵制备纯化纤维蛋白原，硫代巴比妥酸法测定22例正常人，133例肝病患者血浆FSA水平，并对血浆和纯化纤维蛋白原脱唾液酸化前后的凝血酶时间和纤维蛋白单体聚合浊度进行测定。

A modified γ-Al〓O〓 was prepared by a special precipitation method with aluminum nitrate solution containing a certain amounts of orthosilicic acid and ammonia aqueous solution. Compared with commercial γ-Al〓O〓, the modified γ-Al〓O〓 was an effecient catalyst for dehydration of tetrahydrofurfuryl alcohol to dihydropyran. The results revealed that the strong acid sites on the surface of the catalyst may play a crucial role in this reaction.

并以硝酸铝和氨水为原料，用沉淀法制备出一种高比表面和拥有较多强酸中心的γ-Al〓O〓，它在四氢糠醇开环脱水制备二氢吡喃的反应中有优良的催化活性，通过比较此γ-Al〓O〓和普通商业γ-Al〓O〓的Py-TPD图，发现强酸中心在制备二氢吡喃的反应中可能具有关键的作用。

Dunng precipitation, a certain amount of mineral acid such as nitric acid served as an additive, to adjust the precipitation and crystallization processes of cerium oxalates.

沉淀过程中，以一定数量的矿物酸如硝酸作为添加剂，来调整草酸铈的沉淀和结晶过程。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。