查询词典 sulphuric acid

The kinetics of iridium catalyzed oxidation of isobutyl alcohol by cerium in aqueous sulphuric acid medium has been investigated by titrimetric technique in the temperature range of 25~40℃.

在酸性介质中用氧化还原滴定法研究了鈰离子在痕量铱离子催化作用下，於25~40℃区间氧化异丁醇的反应动力学。

Sulphuric acid and 10 Kjeldahl catalyst tablets to 200 ml of distilled water.

在500ml 容量瓶中加入200ml 蒸馏水，然后小心加入50ml 浓硫酸和10片凯氏消化催化剂片，冷却后定容。

The results indicates:immersing seeds of Acacia confusa、Leucaena glauca in sulphuric acid for 7'、1.5' and seeds of Albizia falca in hot water at 70℃ are the optimization treatment condiaions,its germination ratio reached 80%、57% and 46%.

结果表明，台湾相思和新银合欢分别用浓硫酸处理 7min、1.5 min，南洋楹用始温为 70℃的热水处理效果为最好，其发芽率分别达 80 %、5 7%和 46

A series of sulphonated SBS were achieved by reacting SBS blockcopolymer with sulphuric acid, meanwhile, the blends of PVC andsulphonated SBS were studied. By means of strength capabilityexamination and DSC analysis, it was found the miscibility wasincreased after SBS was sulphonated.2 The chemical grafting of styrene and PVC membrane2.1 The reaction condition of graftingBy means of the swelling and seepage of Styrene to PVC film,St was grafted onto PVC film by the initiation of BPO .

采用硫酸对热塑性弹性体SBS进行磺化，得到不同磺化度的产物，并对其与PVC的物理共混进行了研究；通过力学性能及DSC测试，发现SBS磺化后增加了与PVC的相容性(来源：Af2a2a2BC论文网www.abclunwen.com)。2 苯乙烯与聚氯乙烯膜的化学接枝2.1 苯乙烯与聚氯乙烯膜接枝条件利用苯乙烯对PVC的溶胀渗透，在过氧化苯甲酚的引发下发生接枝共聚反应。

And In the 60% concentration of sulphuric acid solution, the dosage of thiourea is 0.1%, while hexamethyl tetramine is not suitable for use.

5浓磷酸溶液中硫脲缓蚀剂用量为0.2％，六次甲基四胺缓蚀剂的用量为0.07％。

Acylvanadium sulfate is prepared by mixing coal mine containing vanadium, fluorite mine and sulphuric acid, then pumped in the reactive tank, further chemical combination and dissolving, acylvanadium sulfate enters in solution, qualified vanadic oxide is prepared.

本方法是将含钒石煤矿、萤石矿和硫酸调浆后，泵入反应槽中，进行化合和溶解，生成硫酸酰钒而进入溶液，经液固分离后得到含钒浸出液，浸出液经采用铁屑还原、氨水中和、萃取、反萃、氨水沉钒、煅烧等成熟工艺处理后，便产出合格五氧化二钒。

In a leaching stage the zinc oxide is separated from the other calcines. Sulphuric acid is used to do this.

在浸出阶段氧化锌用硫酸从焙砂中分离出来。

As a result, the poisoning symptoms appeared at that night, the nonnasality and throut just liked drinking sulphuric acid, heart beat very fast, and the whole body crocked up, lasting for several hours.

结果那晚也出现中毒症状，口腔、咽喉部象喝了硫酸似的，心跳剧烈，全身衰竭等等，维持了几个小时。

After being leached with water,it is releached with 1%sulphuric acid,the leaching rate of vanadium can be increased by 10%.

采用1%的硫酸作为浸出剂对水浸渣进行再浸出，钒的浸出率可提高10%，最高可提高40%～50%。

The effect of different factors to phosphate rock reactivity is studied by experiment. The reactivity index and the resistance slow ability in the resistance to sulphuric acid for 11 phosphate rocks are also discussed.

实验研究了不同因素对磷矿反应活性的影响，并测试了11种磷矿的反应活性指数及抗硫酸的阻缓性能。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。