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。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。