查询词典 acid precipitation

A new catalyst for methanol synthesis was prepared by alternant precipitation between acid and alkali.

采用酸-碱交替沉淀法制备了一种新型的低压甲醇合成催化剂。

After freezing, the tissue is powdered and the enzymes are inactivated by precipitation with perchloric acid.

冷冻之后，组织被粉碎，其中的酶用高氯酸迅速失活。

The separation and purification technologies of amino acid,such as: precipitation ,ion-exchange,extraction and membrane separation were reviewed.

总结了氨基酸分离纯化过程中常用的技术，如沉淀法、离子交换法、萃取法和膜分离法，介绍了各种技术的基本原理、特点和发展动态。

In this paper, high citric acid content was analyzed by precipitation in the system of treating SO2 in flue gas by citrate solution.

本文采用重量法对柠檬酸盐法治理低浓度二氧化硫体系中柠檬酸根进行了分析测定。

All the results show that glutamic acid is an effective additive for the seeded precipitation of sodium aluminate solution.

结果表明：谷氨酸是有效的铝酸钠溶液种分添加剂。

By analyzing principle, the investigating project was primarily determined. Then experiments of leaching with hot water, precipitation arsenic by lime milk, solution arsenic by sulfuric acid, reduction, cooling and crystalling white arsenic have been carried out and the optimum conditions of every step have been obtained.

在分析基本原理的基础上，初步确定了研究方案，按照方案分别进行了热水浸出、石灰乳沉砷、硫酸溶砷、还原、冷却结晶白砷等试验，得到了各个工序的最佳工艺条件。

Polyketone STCO, a special Ecomaterial, poly (1-oxo-2-phentrimethylene), was prepared by the precipitation copolymerization of CO with ST in the presence of catalysts composed of palladium acetate, bident ligand of 2, 2′-bipyridine, strong acid, p-benzoquinone etc.

利用乙酸钯、含氮双齿配体、强酸、对苯二醌等组成的催化体系催化苯乙烯和一氧化碳的沉淀共聚反应，合成出环境友好材料聚酮STCO—聚（1-氧代-2-苯基丙撑）。

Based on the precipitation reaction principle of defluorination in wet-process phosphoric acid production,sodium carbonate and diatomite have been experimented to defluorine from phosphoric acid with different conditions.

基于湿法磷酸沉淀法脱氟工艺的反应原理，以碳酸钠为脱氟剂，硅藻土为助脱氟剂，研究了不同的碳酸钠和硅藻土用量、作用时间、作用温度条件下的脱氟效果。

After peltate yam is water washed, crushed, fermented and acid hydrolyxed, the solid matter and acid water solution are separated via centrifugation, the solid matter is extracted with organic solvent to make saponin extracted into organic phase, the organic phase is back extracted to eliminate other components, the organic solvent is distillation recovered for reuse and precipitation separated saponin is stoved to obtain product.

黄姜经水洗净、粉碎、发酵和加酸水解后，离心分离固体物和酸性水溶液，用一种有机溶剂萃取固体物，皂素被萃入有机相中，经返萃取去除其它成分后，将有机溶剂蒸馏回收，重用，沉淀析出的即为皂素，经烘干即得产品。

The trichloracetic acid/acetone precipitation group: 4 times volume of mixture of trichloracetic acid/acetone was added in the bile sample, washed with 4 times volume of precooled acetone, dried by vacuum freeze dryer and dissolved with lysis buffer.

在胆汁标本中加入4倍体积的预冷三氯乙酸/丙酮混合液，用预冷的丙酮洗涤沉淀，然后用真空冻干机抽干，用裂解液溶解沉淀过夜。

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。