When synapsis is complete the paired chromosomes are referred to as bivalents . 当联会完成的时候,那配成对的染色体叫做二价体。
Sax found average chiasma frequencies of 2.3 to 2.5 per bivalent in pines and larches . Sax发现松树和落叶松每条二价染色体的平均交叉频率是2.32.5。
Vitamin b12 is destroyed by oxidizing and reducing agents, by aldehydes, ascorbic acid, ferrous salts, vanillin and acacia . 维生素B12被氧化剂和还原剂、醛类抗坏血酸、二价铁盐、香草醛和阿拉伯树胶破坏。
Today s special : one for the price of two 今日优惠商品:一物二价
Deterinination of bivalent sulfur and mercaptan in basic residue 碱渣中二价硫及硫醇的测定硝酸银电位法
Agropharmaceutical products . iron sulphate for agricultural use specifications 农药制品.农用硫酸铁二价.规范
We don ’ t ask for second prices 我们货无二价。
Bivalent hydrocanbon radical 二价烃基
Silver exist as ag + , ag2 + or ag in tio2 film , and mostly in ag + 银在tio _ 2膜层中主要以一价态存在,也存在零价态和二价态。
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。