查询词典 chromium

However, chromates have caused increasingly environmental concern. The need to find low toxicity alternatives to hexavalent chromium-based passivation treatment is of prime importance. Molybdate passivation can be used to replace chromate in a wide range of applications.

但由于铬酸盐钝化对环境的污染，寻找一种低毒的代替铬酸盐钝化的处理工艺是十分必要的，钼酸盐钝化是最有前途的一种。

Cement clinkers and fly ashes produced in different areas of China were examined and leachable hexavalent chromium Cr was found in all samples.

调查分析了我国部分地区水泥、水泥熟料和粉煤灰，发现这些材料中均含有一定数量的可溶性六价铬离子 Cr。

According to their latest report , Halloween face paint is contaminated with lead, nickel, chromium and cobalt.

根据他们的最新报导，万圣节的脸部涂料充斥着铅，镍，铬，钴等化学元素。

Ferritic stainless steels contain chromium usually in the range 11 to 18%.

铁素体不锈钢含有铬通常在范围11日至18 ％。

That is to say, the surface of the ferritic stainless steel is a lager of poor chromium and rich silicon.

贫铬层的存在大大降低了该钢种的耐蚀性，且使其表面光泽度变差〔1〕，难应用于对耐蚀和美观要求较高的场合。

Because the iron and chromium ferrite is formed elements, so 400 series stainless steel is completely ferritic stainless steel, with magnetic.

因为铁和铬都是铁素体形成元素，所以400系列不锈钢是完全铁素体不锈钢，具有磁性。

Cr is a ferritic form elements in stainless steel, so the chromium the formation of crystal structure and austenitic formation is a competition between elements.

铬是一种铁素体形成元素，所以铬在不锈钢晶体结构的形成上和奥氏体形成元素之间是一种竞争关系。

The orthogonal experimental method was employed in this work to research the law of effect of Mo, Ni and Cu on the as cast microstructure and mechanical properties of Cr26 high chromium cast iron that used on the furnace liner.

采用正交试验法研究了Mo、Ni、Cu对高炉衬板用Cr26高铬铸铁铸态组织和性能的影响，以宏观硬度和冲击韧度为考察指标，对3种合金元素含量进行了优化设计。

Something plated with a chromium alloy.With it she wore a small black hat with a green-gold flow-er at the side.

与其衣着搭配的是，她常戴一顶黑色小帽，帽边上有一朵青金色的小花。

XD-2003 strap machine is changed from XD-2002 machine which has a cast aluminium on the bed,making the screw,screwtube and speed reducer keeping concentric.the V-model manger on the bed is lower than the flat on which the speed reducer is fixed,the components are finished machining by machine tool.guaranteeing perpendicularity, degree of balance.speed reducer,screw and screwtube is fixed on the base,and the screwtube is in the mini-manger,then ensuring axis keeping concentric with sheath,screwtube feed opening has a chromium hard-wearing sheath,which can improve the lifetime of the screw and screwtube to threefold or to fourfold.

XD-2003 型塑料打包带机组，是在XD-2002型机组的机座上安装了一个铸铁机座，使螺杆，螺筒和减速机保持同心，座上的V型槽比安装减速机的平面低，其部件都是经过机床精加工完成的，保证了垂直度和平衡度。减速机和螺杆、螺筒置于底座上，且螺筒卡在微型槽内。确保轴与套保持同心，螺筒下料口处设有高铬耐磨衬套，这样可使螺杆、螺筒的寿命提高3-4倍。

He and Nina moved to California and lived at 2005 Ivar Street, Apt.

他和Nina搬到加州，并在2005年伊瓦尔街，公寓生活。

Droperidol （ potently inhibits transfected HERGchannels and this is the probable mechanism for QT prolongation.

氟哌利多有效地抑制了转染的 HERG 钾通道，可能是 QT 间期延长的机制。