查询词典 chromium-chlorite

Removal of hexavalent chromium from aqueous solution by iron nanoparticles.

太湖春季水体中的胶体有机碳含量及影响因素分析。

In addition, we provide cadmium, l ead, mercury, hexavalent chromium, PBB and PBDE, analysis of packaging materials and

此外，我们提供的镉，1 部、汞、六价铬、多溴联苯和pbde，分析包装材料和部件为符合欧盟的规定等。

The influence of parameter of the inclined cooling plate to semi - solid structure of hypoeutectic high chromium was studied.

采用倾斜板冷却体法对亚共晶高铬铸铁进行半固态成形，主要研究倾斜板参数对亚共晶高铬铸铁半固态组织的影响规律。

Influence of pouring temperature on the size and shape of primary austenite in semi-solid hypoeutectic high chromium cast iron was studied.

利用倾斜板冷却体法制备了亚共晶高铬铸铁半固态浆料，并且研究了不同浇注温度对半固态亚共晶高铬铸铁初生奥氏体的影响。

A chromium free conversion coating at least equivalent in corrosion protective quality to conventional chromate conversion coatings can be formed on metals, particularly cold rolled steel, by a dry-in-place aqueous acidic liquid comprising: a component of anions, each of said anions consisting of at least four fluorine atoms and at least one atom of an element selected from the group consisting of titanium, zirconium, hafnium, silicon, and boron, and, optionally, ionizable hydrogen atoms, and optionally, one or more oxygen atoms; a component of cations of elements selected from the group consisting of cobalt, magnesium, manganese, zinc, nickel, tin, zirconium, iron, and copper; the ratio of the total number of cations of this component to the total number of anions of component being at least 1:5; sufficient free acid to give the composition a pH in the range from 0.5 to 5.0; a component selected from the group consisting of phosphorus-containing inorganic oxyanions and phosphonate anions; and a component selected from the group consisting of water-soluble and water-dispersible organic polymers and polymer-forming resins and, preferably, also including a component selected from the group consisting of tungstate, molybdate, silicotungstate, and silicomolybdate anions.

通过对包含以下成分的含水酸性液体进行干燥，可以在金属上形成无铬的转换涂层，该涂层与普通铬酸盐转换涂层相比，至少在抗腐蚀质量上等效：$_一种阴离子成分，所述各个阴离子包括至少4个氟原子，至少选自钛、锆、铪、硅与硼元素中的1个原子。任选地可离解的氢原子，任选地1个或多个氧原子；$_一种选自钴、镁、锰、锌、镍、锡、锆、铁与铜元素的阳离子成分，上述成分的阳离子总数与成分内的阴离子总数之比至少为1∶5；$_足够的游离酸以使该组合物的pH值在0.5～5.0的范围内；$_一种选自含磷的无机含氧阴离子与膦酸盐阴离子的成分；$一种选自水溶性与水可分散性有机聚合物与聚合物形成的树脂的成分，优选还包括一种选自钨酸盐、钼酸盐、钨硅酸盐与钼硅酸盐阴离子的成分。

In this thesis, we describe a facile and economical synthesis of-abscisic acid from keto-isophorone and 3-butyn-2-ol through ketalization, oxidization, Witting-Horner reaction, reduction with chromium sulfate and other steps in 13% total yields. Compared to the previous routes, the starting materials are more commercially available and cheaper and the synthetic process is more easily controlled in our method, but the yield of this route is still to be improved.As to isostere principle, cyclopropyl and methyl vinyl are a couple of isostere.

本论文设计并完成了一条全新的外消旋脱落酸(1)全合成路线，从廉价的工业原料氧化异佛尔酮和丁炔醇出发，经过缩酮化反应、氧化反应、Wittig-Horner反应、CrSO_4选择性还原反应以及水解等七步反应实现了脱落酸的全合成，总产率达13％，与以往路线相比，该路线所用试剂廉价、合成路线简单，但产率有待提高。

Meanwhile, the mixture of KAlO〓—K〓CO〓—KOH obtained by clean technology of potassium chromate was separated successfully to obtain qualified Al 〓 product and deeper utilization of the components in chromium chemical industry was realized.

对铬酸钾清洁工艺中的KAlO〓—K〓CO〓—KOH混合物进行了有效分离，得到质量合格的氢氧化铝产品，实现了铬化工的多组份深度利用。

It is shown that the amount of chromium carbide precipitated at the grain boundaries increases nearly logarithmically with time of sensitization, and the precipitation of 1—2% of carbon contained in the steel at the grain boundaries is sufficient to cause severe intergranular corrosion.

此外，18鉻-8镍型不锈钢中所含碳的总量中只要有1—2％析出在晶界，就足以引起严重的晶间腐蚀。

Varieties of Diopside include "Russian Diopside"(a chromium-rich Diopside known for its deep green color),"Violan"(a rare blue variety found in Italy ),"Cat's Eye Diopside"(green with the effect due to inclusions of rutile needles),"Malacolite","Salaite","Dekalbite" and "Star Diopside".

透辉石的品种包括&俄透辉石&、&青辉石&、&猫眼透辉石&（因含有金红石会状包体而产生绿猫眼发光效果）、&白透辉石&、&次透辉石&、&纯透浑石&以及&星芒透辉石&。

The evolution of pro-eutectic austenite in semi-solid high chromium cast iron was studied by self-made slope sampling plate through metallographical image analysis system.

采用自行研制的倾斜取样板进行取样，并借助金相图像分析系统研究了半固态高铬铸铁先共晶奥氏体的衍变过程。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。