铬

A new fading spectrophotometric method for the determination of chromium is proposed, based on the decoloration of thoron Ⅱ oxidized by chromium in the medium of 0.32 mol/L sulphuric acid.

基于在0.32 mol/L硫酸介质中，铬氧化钍试剂Ⅱ褪色，提出了钍试剂Ⅱ褪色分光光度法测定铬的新方法。

It has been suggested that Cr may be a component of glucose tolerance factor in vivo.

六价铬和三价铬，作为环境中存在的同一种元素的不同形态，对人类却有着不同的影响。

A copper-chromium bimetal plate having a surface chromium layer of 2 μ was coated with a 4 percent solution in toluol of a light-sensitive polymer containing light-sensitive aryl sulphonylazide groups and a minor amount of hydroxyl groups attached to the polymer backbone.

阿铜铬双金属板具有2μ铬层表面涂有在一轻甲苯百分之四解决敏感的聚合物含有光敏感芳sulphonylazide团体和一个连接到聚合物骨架羟基小数额。

Methods Cassia Seed was soaked in chromium trichloride aqueous solution of different concentration （from 0 to 3600 mg/L） at 37℃ for 12 hours.

方法用不同浓度的三氯化铬水溶液，37℃浸泡决明子过夜，收获浸泡后的决明子，作为0h时间点的样品，然后分别收获24、48、72、96h的决明子芽，用石墨炉原子吸收分光光度法测定铬含量。

The trivalent chromium plating has been proposed for a long time.

实际上提出用三价铬代替六价铬的研究已经有很长时间。

Chromium is widely distributed in nature, organisms mainly trivalent form of chromium.

铬在自然界中广泛分布，生物体中主要以三价铬的形式存在。

Hexavalent chromium is the most toxic form, the toxicity of trivalent chromium than 100 times.

六价铬是毒性最大的形态，其毒性比三价铬高100倍。

A process for trivalent chromium electroplating in sulphate system was established.

开发了一种硫酸盐体系三价铬电镀铬工艺，确定了其所使用的阳极，并将所获得的产品相关性能参数与国外同类产品进行了对比。

The technology for the hard chromium electroplating of high tungsten stainless steel was investigated.

为了在高钨不锈钢基体上获得符合技术要求的电镀硬铬层，研制了一种特殊的镀铬新工艺。

Uvarovite is a rare species of the garnet group. The mineralogical characteristics and coloring mechanism of uvarovite from eastern Tibet were systematically investigated and results are reported in this article.

钙铬榴石是石榴石族中的稀有品种，文中对近年新发现的西藏东部钙铬榴石样品进行了矿物学特征分析和呈色机理探讨。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。