查询词典 trivalent

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。

One such crystal is the ruby, which contains trivalent chromium ions dispersed in a matrix of alumina

这样的晶体有一种叫"红宝石"，它包含的三价铬离子弥散在氧化铝的基体中。

Causes for the formation of hexavalent Cr in trivalent Cr electroplating process were analyzed.

分析了三价铬镀铬过程中产生六价铬的原因。

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。

Carol Pandak says testes tests found the new vaccine to be 30% more effective than the trivalent vaccine.

卡罗尔·潘达克表示测试结果显示新疫苗比三价疫苗的效果要好30%。

Carol Pandak says tests found the new vaccine to be thirty percent more effective than the trivalent vaccine.

Carol Pandak表示，试验显示，新的疫苗效用超过三价疫苗的30%。

Trivalent metallic element of the rare earth group.

稀土属的三价金属元素，一种可延展的银白色铁磁体。

Trivalent chromium electroplating not only can reduce pollution obviously and save pollution treatment cost, but also can improve the quality of electroplating products.

三价铬电镀不仅可明显减少电镀对环境的污染，节省大量的污染治理费用，而且还可提高电镀产品的质量。

Any of various salts containing the negative trivalent radical Fe6and used in making blue pigments.

一种比较近代的、人们好采用的技术是在混合过程中加入可溶性的三价锑衍生物。

The sorption of trivalent Am and Eu onto TiO_2 and Al_2O_3 was studied by using the batch techniques.

本文用静态法研究了锕系元素中的Am及其类比物Eu在氧化钛及氧化铝上的吸附行为及规律。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。