查询词典 CR

It states that, by using this process, the removal rates of COD Cr and chromaticity are over 90.2% and 99.1% respectively.

实验结果表明，该法可使印染废水的CODCr与色度去除率分别达到 90 。2 %和 99.1%。

The depth of Cr layer had been 100μm. Metallurgy interface exists between matrix iron and alloying chrome layer.

该工艺可以使铬渗入到铸铁基体中达100μm以上，合金化层与基体具有良好的冶金结合。

Using H2SO4 as acidulant,chromic sulfate with high purity was obtained by crystallization,which was applied to leather industry as chrome tanning agent .

将电镀废水中的六价铬还原成Cr，用化学沉淀法和絮凝法将其转化为Cr3沉淀，通过硫酸酸化，结晶为高纯硫酸铬，作为皮革工业的铬鞣剂。

The dyes wastewater of magenta fuchsine、acid chrome ming blue RRN and acid chrome fast red S-80 are all characterized by high COD Cr ,high colority,complication of organic components, and they are not easy to be biodegrated.

碱性品红，酸性媒介藏青RRN，酸性媒介红S—80，三种染料废水均具有高CODCr、高色度、有机物含量复杂且不易被微生物降解等特点。

High strength and high chrome steel for oil well tubing is a kind of material difficult to machine.

高强度高Cr钢油井管材料属于切削加工中的难加工材料，加工技术要求高。

The chrome reduced tannage with resin tanning agent and modified glutaraldehyde pretanning, and combination Al-Cr tanning were investigated.

研究了树脂鞣剂、改性戊二醛鞣剂预鞣，铝－铬结合少铬鞣制轻革的工艺及方法。

In conclusion, not only the methods and relative situation of extracting Cr from chrome slag but also the feasibility of producing yellow chrome by using chrome slag"s leachate were studied in this dissertation. All these study will provide necessary theoretical basis for the industrialization of producing yellow chrome from the chrome slag"s leachate.

本论文研究的创新之处在于：本研究以从铬渣中提取六价铬作为立足点，消除了解毒后的铬遇氧化条件毒性恢复的可能，利用回收的六价铬制取铬黄颜料的研究初步证明，该法不仅切实可行，而且成本低廉、效益好。

Influence of the concentration of Cr in the leachate and quantity of Pb(CH3COO)2 of Pb(NO3)2 on the reaction of synthesizing yellow chrome was also studied. Finally, according to the criterion and standard method in GB3184-82, some yellow chrome synthesized in the experiments was sampled and the concentration of PbCrO4 in these samples was determined. The following conclusion can be drawn from these experiments.

根据中华人民共和国国家标准GB3184-82中的规定铅铬黄颜料的技术质量指标和检测方法，测定了铬黄样品中铬酸铅含量的厂迄回【、矾士牢位论父泅仰yW盯皿'S川mS达标情况，结论如下：门）反应中重铬酸盐的浓度并不需要达到前人所提出的150～2509·L'的范围，在一定条件下低于此浓度时对铬黄生成反应并无不利影响。

The major difficulty that I have experienced with Cr is that it often exists in forms that are difficult to put into solution. Chromite

采用铬作为实验对象的主要难题是它的存在形式是难溶于水的，例如亚铬酸盐FeO。

The major difficulty that I have experienced with Cr is that it often exists in forms that are difficult to put into solution. Chromite FeO.

处理铬时我所遇到的最大困难就铬通常都以难以形成溶液的形式存在。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。