二价

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、铈钙硅石是构成高炉渣主要矿。

The chiasmata can slip off the ends of the bivalents, and thus chiasma frequency may be reduced by terminalization.

有时交叉以从二价体处滑开，因此移过程以降低交叉频率。

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：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移动过程。