查询词典 chromium trioxide

Optimal pretreatment conditions of electroless nickel plating for magnesium were decided by many experiments. Phosphoric acid technology was used to instead of acid processing by chromium trioxide and ferric chloride, and excellent coating was obtained by using dipped zinc, cyanide copper, nickel as medium.

通过多次试验确定了镁及镁合金的前处理方案，以磷酸洗的方法代替传统的铬酐加三氯化铁酸洗浸蚀的前处理工艺，配置简单，操作方便，以浸锌层、氰化铜层和中性镍层作为化学镀中间层，得到了结合力良好的化学镀镍层，获得了镁合金表面处理的新突破。

Methylene chloride ; catalytic combustion ; catalyst ; vanadium pentoxide ; chromium trioxide ;γ-alumina ; pottery ; waste gas treatment

二氯甲烷；催化燃烧；催化剂；五氧化二钒；三氧化铬；γ-氧化铝；陶瓷；废气处理

Chromium trioxide.

六羰化铬。

Nickel chromium alloy was cheaper than nickel, and its sputtering aggradation velocity was more than that of nickel, so the immediacy costs of sputtering nickel chromium alloy electrode was less than that of sputtering nickel electrode.

镍铬合金价格低于镍金属，溅射沉积速率也比镍金属要快，所以溅射镍铬电极的直接成本低于溅射镍电极。

Barley is the main stuff of beer brewing and chromium is a vital trace element to human. Potassium chromium sulfate was added to the water during the barley infusion and enriched-Cr malt was executed.

啤酒酿造的主要原料是大麦，铬是人体必需的一种微量元素，本文在浸麦过程中用KCr(SO_4)_2处理麦芽，制成了富铬麦芽，研究了铬对麦芽生理生化特性及成品麦芽质量的影响。

After the wastewater was treated by using lead chrome yellow production technology in fact, the concentration of hexavalent chromium was 0.361 nig/L, pH value was 6.24, the concentration of total chromium was 0.963 mg/L and CODer was 67.200 mg/L. The standard exponents of all indices were all teas than 1, so the standard-attainment discharge could be realized.

采用铅铬黄生产工艺实际治理污水后，6价铬浓度为0.361 mg/L、pH值为6.24，总铬浓度为0.963 mg/L，CODcr为67.200 mg/L，各项指标标准指数均小于1，可以实现达标排放。

Chromium Green is a similar, but a product of Chromium and not for use on the lips

铬绿，是一种类似物，但是一种含铬的产品，不能用在嘴唇上

The letterpress adopts the suitable solid reagent to take the place of the liquid sour and the organic reagent in the Diphenylcarbazide hydrazine intensity of light method (GB7467-87) to mensurate. hexavalent chromium in water.. It has carried out the rapid mensuration of chromium in water using entire solid commixture reagent and it selects affecting condions of the mensuration and maks the optimization .

为应对突发性水污染事故的现场应急监测， 2006年我中心购置的美国哈希便携式DR/2400型多参数仪，该设备适用于地表水和地下水等环境水中铬的测定，是一种准确、灵敏、快速、简便的测定仪，在2006年陕西镇安5-30水污染事故的应急监测中发挥的极其重要的作用，但由于该仪器所使用的试剂是专用的试剂，其价格昂贵、购置麻烦。

A typical representative of such a polymetal layer printing master blank contains a steel plate whereon a copper layer (7 to 10 μ thick) and a chromium layer (2 to 3 μ thick) with mat aspect are electrolytically deposited, which chromium layer in its turn is coated with the photosensitive coating suited for preparing the resist.

1991年参加过多金属层印刷主空白的典型代表，包含了钢板地上一铜层（7至10μ厚）和铬层（2至3μ厚垫方面）的电解沉积，反过来的铬层涂有准备的抵制适合光敏涂料。

The conclusion is that celeste color relate to the mica which contain chromium, the emerald jade has the same cause, the cause of green color of the green- pink jade has some relativity to epidote, green part of the white-green jade is found that the mineral is diopside which contain mass of iron and chromium.

通过显微镜下观察、电子探针、X射线粉晶衍射等常规岩石测试方法，并结合阴极发光，得出天蓝玉与翠绿玉的绿色部分主要为含铬的云母；绿粉玉中的绿色部分颜色产生与绿帘石有关，且由于Fe的含量比较高，造成了绿色部分比较暗淡，不鲜艳，且颜色较浅；绿白玉中绿色部分，经矿物分析主要为透辉石，且Cr、Fe含量都比较高，暗绿颜色成因与透辉石有关。

As of Tuesday, Google's results were still censored in China.

截至周二，谷歌的搜索结果仍受中国审查。

In order to make the positive action increase and negative one decrease, the sub-forces of the social factors must be adjusted to form a centripetal force.

在这一过程中，人的主体性发挥是社会有机体健康发展的灵魂。