1.四价的
2.有四种原子价的
1.with a valence of four
2.with a valency of four
1.While alum was generated tetravalent oxidation state oxidation of tannin extract desulfurization agent immediately pentavalent alum.
同时生成的四价矾被氧化态栲胶脱硫剂立即氧化为五价矾。
2.Tetravalent A, C, Y and W135 conjugate vaccine have been licensed since 2005 for use in children and adults in the United States and Canada.
Y和W135四价结合疫苗自2005年以来在美国和加拿大获准用于儿童和成年人。
3.The Determination of Total and Tetravalent Selenium in Water and Waste Water by Hydride Generation-atom Fluorescent Spectrometry
氢化物发生-原子荧光光度法测定水和废水中的总硒和四价硒
4.Bivalent and tetravalent human papillomavirus vaccines protecting against cervical cancer;
预防宫颈癌的两价和三价人类乳突病毒疫苗；
5.Neural Toxicity Induced by Divalent and Tetravalent Forms of Manganese and its Protection by Selenium
不同价态锰对神经细胞的毒性比较以及硒的保护作用
6.Hydrothermal synthesis and thermal stability oflayered compound of tetravalent metal phosphate
层状磷酸盐的水热合成及其热稳定性