查询词典 sulfuric

In modern chemical engineering, inorganic acids and metal haloids are wildly used as catalysts in esterification, such as sulfuric acid, phosphoric acid and AlCh, SnCU, TiCU.

目前，在工业化生产中，对于酯化反应多采用浓硫酸、磷酸等无机酸或金属卤化物，如AlCl_3、SnCl_4、TiCl_4等作为催化剂。

A production method as defined in claim 2, wherein phosphoric acid, sulfuric acid or carbon dioxide is employed as the neutralizer for neutralizing the catalyst composed of alkaline material contained in the heavy solution.

生产方法所界定的索赔二，其中，磷酸，硫酸或二氧化碳是受雇于作为中和剂为中催化剂组成的碱性物质，载于沉重的解决办法。

A simple, fast and selective spectrophotometric method for the determination of trace nitrate ion in uranium dioxide was developed, based on the fade of indigo carmine with nitrate ion in sulfuric acid medium.

基于硝酸根离子对靛蓝二磺酸钠的褪色反应，建立了一个简单、快速、选择性好的二氧化铀产品中硝酸根离子的测定方法。

Our main production of iron oxide products, iron oxide red H110, H130, HO01-02, H190, iron oxide yellow G313, 313, 722 black iron oxide, iron oxide brown 842,7602, Green iron oxide, iron oxide-floor yellow, iron oxide 980,990, a number of varieties, a tin of raw materials, nitric acid, sulfuric acid oxidation and the second is made of high-quality paint. 980,990 iron oxide in response to short-iron through the burning and made of magnetic materials.

本厂主要生产氧化铁系列产品，氧化铁红H110、H130、HO01-02、H190等，氧化铁黄G313、313等、氧化铁黑722等、氧化铁棕842、7602、氧化铁绿、氧化铁兰、地板黄、980、990三氧化二铁等多项品种，原材料是以铁皮、硝酸、硫酸二次氧化而制成的具有高品质的颜料。980、990三氧化二铁是以纯铁粉通过反应短烧而制成的磁性材料。

Sulfuric acid concentration and impurity iron ions, chloride content on copper coating quality solution will have significant impact, in particular, management should be.

硫酸浓度、杂质铁离子、氯离子的含量差铜层的质量感化较不小，溶液处置答予不入格的鄙薄。

Fe2O3/SO(superscript 2- subscript 4) solid super acid was obtained by dissolving iron nitrate in ammonia, dipping the resultant iron hydroxide in sulfuric acid, filtration and calcination.

硝酸铁溶于氨水得到Fe3后再用硫酸浸泡，经过滤、焙烧制得固体超强酸催化剂Fe2O3/SO(上标 2-下标 4)。

The mainly use of sulphide iron ore resources is to be fired to sulfuric acid in the past.

过去对硫铁矿资源的利用主要是烧制硫酸，烧渣因含铁低、含硫和其他杂质高而不能被有效利用。

Our country has large-volume production of sulfuric acid, so there are several millions even kilobits tons of pyrite cinder produced every year.

我国是硫酸生产大国，每年产生数百万乃至千万吨烧渣，若能回收其中80％的铁，效益已十分可观。

The results show that,after the exciting of 0.05mol/L sulfuric acid and acetic acid,the capability of composite slag cement advanced.

试验表明：在0.05mol/L的硫酸和醋酸激发下，复合渣水泥各项性能指标得到较大的提高。

The leaching ratio of copper from the copper slag, roasted at 680℃ for 4 hours, attains approximately 92% under the conditions of 2 mol/L sulfuric acid leaching for 2 hours at 70℃.

在680℃焙烧4h后，采用2mol/L硫酸于70℃浸出2h后可以达到良好的浸出效果，使铜的浸出率达到92%以上。

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％。