trivalent

White passivating liquor trivalent chromium for zinc plating is prepared based on a new chemical formulation.

镀锌三价铬白色钝化液是由一种新的化学配方制得.

One means of accomplishing this end is to add trivalent cations to the water.

实现这一目的的一种方法是将三价阳离子加入水中.

" Trivalent chromium passivation shall be used unless written exception or specification update provided. "

要应用三价铬的钝化,有书面指出的例外或规格更新时除外.

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.

A trivalent metallic element of the rare earth group, it could occurs with yttrium.

稀土属三价金属元素, 可以与钇共生.

The major advantages and disadvantages of trivalent chromium electroplating were introduced.

介绍了三价铬镀铬的主要优点与缺点.

The hazards of hexavalent chromium electroplating, and the benefits of trivalent chromium electroplating were analyzed.

分析了六价铬电镀的危害及三价铬电镀的优点, 以及三价铬电镀取代六价铬电镀带来的效益.

The history of trivalent chromium electroplating was looked back.

回顾了三价铬镀铬的历史.

The development history of trivalent chromium passivation for zinc plating was overviewed.

概述了镀锌三价铬钝化的发展历程.

She explains that health workers have been using what are called trivalent vaccines in some places.

她说有些地区的保健人员一直在使用所谓的三价疫苗.

The plating process involves trivalent chrome passivation, and so is free from Cr 6.

在电镀过程涉及的三价铬钝化, 所以是免费的由铬.

The trivalent vaccine against typetype 3 against type 1 type one and highly effective against typetype 2.

三价疫苗对于类型3病毒效果最差,类型1病毒效果稍好,对于类型2泽很有效.