A compound derived from ammonia and containing the bivalent NH group combined with a bivalent nonacid group. 在分析中用作钯或镍的沉淀剂的化合物。
The practice showed that the blast furnace slags mainly consisted of melilite,cuspidine,bivalent metallic sulphide and Ce-Ca silica. 黄长石、枪晶石、二价金属硫化物、铈钙硅石是构成高炉渣的主要矿物。
The chiasmata can slip off the ends of the bivalents, and thus chiasma frequency may be reduced by terminalization. 有时交叉可以从二价体末端处滑开，因此移端过程可以降低交叉频率。
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 paired chromosomes are called bivalent or tetrad chromosomes.
成对的染色体称为二价体（也称为四分体）。
《卫报》阅读精选
Bivalent vaccines have advantages over the original vaccines as they both top up and broaden our immunity.
二价疫苗比原始疫苗有优势，因为它们都能增强和扩大我们的免疫力。
日常生活医学科普
However, the homologous chromosomes of each bivalent remain tightly bound at chiasmata, the regions where crossing-over occurred.
然而，每个二价体的同源染色体仍然紧密结合在交叉部位，也就是发生交叉的区域。
VOA慢速英语_世界
Health officials in Britain and other European countries also offered " bivalent" shots to target different versions of the virus.
英国和其他欧洲国家的卫生官员也提供了针对不同版本病毒的二价疫苗。
TED演讲（视频版） 2022年10月合集
I know we have the bivalent available now.
我知道我们现在有二价的。
Engvid-James-课程合辑
So you can go, okay, bivalent means with two things, okay, got it.
所以你可以走了，好吧，二价意味着两件事，好吧，明白了。
TED演讲（视频版） 2022年10月合集
I plan to get my updated BA.4-5 bivalent at the end of September, the first week in October.
我计划在 9 月底，即 10 月的第一个星期，获得我更新的 BA.4-5 双价。
Engvid-James-课程合辑
So it'll tell you today's word is bivalent, and it'll explain it, and just that's the word of the day.
所以它会告诉你今天的词是二价的，它会解释它，这就是今天的词。
日常生活医学科普
The paired and replicated chromosomes are called bivalents or tetrads, which have two chromosomes and four chromatids, with one chromosome coming from each parent.