负二价的硒离子将是等电子的，因为如果你给硒原子加上两个电子，你会得到,和氪原子相同的电子排布。
So, selenium 2 minus is what's going to be isoelectronic, because if you add two electrons to selenium, you'll get the same electron configuration that you have for krypton here.
与古巴的芬莱研究所合作，Bio - Manguinhos正在与世卫组织合作，确保在下一个流行季节之前供应多达1000万剂二价AC群脑膜炎疫苗。
In partnership with the Finlay Institute in Cuba, Bio-Manguinhos is working with WHO to ensure a supply of up to 10 million doses of bivalent ac meningitis vaccine by the next epidemic season.
我们这里是不二价的。
本文在总结前人对汉语语序研究的基础上，考察了汉语两千多个二价动词。
This paper, based on a summary of the existing researches on Chinese word order, examines more than 2,000 bivalent modern Chinese verbs.
我们购物中心坚持货无二价政策。
铬的，有关铬的或含铬的，特指二价铬。
Of, relating to, or containing chromium, especially with valence 2.
这是公司制定的统一销售价，不会有二价。
This is the uniform retail price determined by the company and there shall be no other prices.
终变期末有些二价体的同源染色体只在末端连在一起。
Diakinesis bivalents end of some of the homologous chromosomes together only at the end.
一种基与中心金属离子(如二价铁离子)结合，形成杂环。
The attachment of a group to a central metallic agent such as iron with two valences to form a heterocyclic ring.
并讨论了二价碘酸盐水化物的稳定性与阳离子电负性的关系。
The stability of hydrated divalent iodates is expected to be related to the electronegativity of the corresponding cations.
渠道内进行着中和作用、铁与铝的沉淀作用及二价铁的氧化作用。
It carries on the neutralization, precipitation of iron and aluminum and ferrous oxygenation alone the channel.
通过顺磁共振的方法证实了反应过程中二价铜和稳定自由基的存在。
The electron spin resonance (ESR) spectrums demonstrated the existence of Cu(II) and stable radicals during the polymerization process.
用电生醌分别进行毫克量亚钛和二价钒的库仑滴定，误差为千分之几。
Coulometric titrations of milligram quantities of titanous ion and hypovanadous ion give errors less than 1 per cent.
利用二价铁离子的联吡啶络合物，示差脉冲伏安法测定土壤中的二价铁离子。
This study attempted to determine ferrous ions through ferrous-bipyridyl chelate by differential pulse voltammetry.
结果显示配合物3有四边形孔穴的结构，荧光性能显示可以探测二价镁离子。
The results show: complex 3 have a square-like hole and may be employed in probing Mg~(2+) for use in fluoroimmunoassays.
与期望染色体配对模式相比，双二倍体中二价体出现的频率有明显增大的趋势。
Frequencies of bivalents in the amphidiploids tended to increase obviously in comparison with the expected chromosome pairing model of the meiosis.
用离子交换方法制备了铜交换的分子筛，研究了将二价铜还原为一价铜的方法。
Cupric ion exchanged NaY zeolite was prepared. The method to reduce cupric into cuprous exchanged zeolite was studied.
实验表明，所制备的纳滤膜能有效截留二价和多价阳离子，对单价阳离子的截留率极低。
The result showed that bivalent and multivalent cations could be removed effectively, while the rejection of univalent cations was very low.
目的构建柯萨奇病毒（CV）B1/B3型二价VP1基因免疫质粒，并探讨其免疫原性。
Objective To construct a bivalent VP1 gene vaccine against Coxsackie virus B1 and B3 (CVB1 and CVB3) and to test its immunogenicity in mice.
合成了两个二价的过渡金属磺酸化合物，并通过X-射线衍射单晶结构分析进行结构表征。
Two novel divalent transition metal disulfonates were synthesized and characterized by X ray single crystal diffraction.
偶线期时，以同源染色体活跃的、特定的配对(联会)为特征，形成了单倍数的二价染色体。
Synapsis (pairing) the association of homologous chromosomes during the prophase stage of meiosis that leads to the production of a haploid number of bivalents.
本文研究了强碱性条件下，以乙二胺为络合剂，用水合肼把二价镍离子还原为单质镍的方法。
Under the condition that the strong basic is medium and ethylene diamine is complex reagent, the method that Ni2 + of wastewater is deoxidized by hydrazine hydrate is studied.
这颗彗星蒸发的冰中含有氰和二价碳，在太空真空环境下被阳光照射时，两种气体均发出绿光。
Vaporizing ices from the comet included cyanogen and diatomic carbon, both gases that glow green in sunlight out in the vacuum of space.
通过实验利用二价铁离子对天然有色蛋白质纤维进行预处理，可以有效的降低损伤，提高白度。
The experiment makes crude protein fiber a pretreatment with ferrous ion. It can increase whiteness and reduce the damage effectively as well.
检测方法基于二甲酚橙和三价铁形成的复合物显色反应，而三价铁由过氧化物氧化二价铁得到。
The assay is based upon formation of a complex between Xylenol Orange and ferric iron, which is produced by the peroxide dependent oxidation of ferrous iron.
显然这看起来是一个问题，因为我们知道实际上，甲烷是四价的，而这告诉我们它仅仅是二价的。
So this should immediately look like a problem because we know, in fact, that methane is tetravalent, and this is telling us it's only divalent.
第一部分为二醋酸碘苯、二价铜离子及联咪唑促进下的1，3-二羰基化合物与亚砜的反应研究。
For the first part, we stressed reactions of sulphoxide with 1,3-dicarbonyl compounds promoted by Cu(OAc)2·H2O, 2,2′-biimidazole and iodobenzene diacetate.
本发明的特征是从锰污染的土壤中分离得到一株对可溶二价锰有氧化作用的芽胞杆菌MK3-1。
The invention is characterized in that the Bacillus sp MK3-1 which has oxidation effect on soluble bivalent manganese is obtained through the separation from soil with the manganese pollution.
本发明的特征是从锰污染的土壤中分离得到一株对可溶二价锰有氧化作用的芽胞杆菌MK3-1。
The invention is characterized in that the Bacillus sp MK3-1 which has oxidation effect on soluble bivalent manganese is obtained through the separation from soil with the manganese pollution.
应用推荐