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沉淀剂物。
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沉淀剂物。
The practice showed that the blast furnace slags mainly consisted of melilite,cuspidine,bivalent metallic sulphide and Ce-Ca silica.
结表明:、枪晶、二价金属硫物、铈钙硅是构成高炉渣主要矿物。
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末端移动过程。
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。
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