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- bivalent catio 二价阳离子
- Of or containing bivalent nickel, Ni2+. 含二价镍的有或含有二价镍Ni2＋
- Bowe, F .G. (1995/1998).Birth to fi ve: Early childho od special edu catio n . 傅秀媚(译)。婴幼儿特殊教育，出生到五岁。台北：五南。
- Bowe, F .G. (1995/1998).Birth to fi ve：Early childho od special edu catio n . 傅秀媚(译)。婴幼儿特殊教育，出生到五岁。台北：五南。
- A bivalent hydrocarbon radical,CH2-,a component of unsaturated hydrocarbons. 甲叉，亚甲一种双价碳氢基，CH2－，不饱合碳氢化合物的一个组成部分
- A bivalent hydrocarbon radical, CH2-, a component of unsaturated hydrocarbons. 甲叉，亚甲一种双价碳氢基，CH2－，不饱合碳氢化合物的一个组成部分
- The influence of reaction temperature, reaction time on the acid number, amic number and catio. 研究了反应温度、反应时间、原料配比对产物表观粘度、酸值、胺值和阳离子度的影响。
- A bivalent organic radical,C6H4,derived from benzene by removal of two hydrogen atoms. 亚苯基一种二价的有机基因，C6H4，通过去掉两个氢原子，从苯中衍生。
- Bivalent Describing any pair of homologous chromosomes when they pair up during MEIOSIS. 二价染色体：在减数分裂中配对时的任意一对同源染色体。
- A compound derived from ammonia and containing the bivalent NH group combined with a bivalent nonacid group. 亚胺源自氨的一种化合物，含有与一个二价非酸基结合的氨基（NH）
- CYTOLOGICAL STUDIES OF AN UNEQUAL BIVALENT IN A NATURAL POPULATION OF THE GRASSHOPPER, CATANTOPS BRACHYCERUS WILL. 短角斑腿蝗(Catantops brachycerus Will.;)自然群体中不等双价体的细胞学研究
- A bivalent organic radical, C6H4, derived from benzene by removal of two hydrogen atoms. 亚苯基一种二价的有机基因，C6H4，通过去掉两个氢原子，从苯中衍生
- But bivalent and trivalent metal salts of the phosphoric acid had little effect on properties of iPP. 而二价的钙盐、镁盐、锌盐和三价的铝盐的成核效果不明显。
- The effect of univalent ions and bivalent ions on equipment operation parameters were investigated. 一价离子与二价离子相比，树脂使用周期长，操作范围宽。
- The International Coordinating Group (ICG) on Vaccine Provision for Epidemic Meningitis Control has provided 1 800 000 doses of bivalent AC vaccine. 为控制流行性脑膜炎提供疫苗国际协调小组已提供180万剂二价AC疫苗。
- Objective To construct a bivalent VP1 gene vaccine against Coxsackie virus B1 and B3 (CVB1 and CVB3) and to test its immunogenicity in mice. 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。
- Terminalization The movement of chiasmata to the end of the bivalent arms, a process that may occur during late prophase I of meiosis. 交叉)移端：发生在第一次减数分裂后期，染色体交叉向二价体染色体臂的末端移动的过程。
- The results indicate that all three kinds of additives can promote sintering of magnesia calcium brick,with the leading of TiO 2.TiO 2 or Fe 2O 3 can react with CaO to get CaTiO 3 or Ca 2Fe 2O 5.CeO 2 can not react with CaO. 添加TiO2 、Fe2 O3与CaO反应生成了CaTiO3和Ca2 Fe2 O5,添加CeO2 与CaO不生成化合物。
- A compound derived from ammonia and containing the bivalent NH group combined with a bivalent acid group or two monovalent acid groups. 酰亚胺源自氨的一种化合物，含有与一个二价酸基或者二个一价的酸基结合的氨基（nh）
- The average frequency was 0.036 for univalent,9.18 for bivalent,0.036 for trivalent,0.80 for quadrevalent and 0.38 for hexavalent. 其平均频率分别为单价体0.;036;二介体9
