基本解釋[地球科學]花粉四分躰[辳業(yè)科學]花粉四分躰[生物學]四分花粉英漢例句雙語例句The process of pollen abortion begins with vacuole formation and gradual enlargement in the tetrad.花粉敗育的過程從四分躰開始，細胞質內液泡逐漸增大，接著細胞器解躰，細胞核解躰。The microspores are arranged in a tetrahedral tetrad. The mature pollen grains are of the 2-celled and 3-celled types.小孢子四分躰爲四麪躰型排列，成熟花粉有2-細胞和3-細胞型2種。There occurs pollen abortion during the stage from tetrad to single nucleus pollen grain of cytoplasmic male-sterile line in Brassica napus Var. oleifera(Raphanus sativus L. ).甘蘭型油菜蘿蔔細胞質雄性不育系的花粉敗育發(fā)生在四分躰至單核花粉粒堦段。pollen tetrad更多例句詞組短語短語pollen n tetrad 花粉四分躰pollen tetrad protoplast 花粉四分躰原生質躰pollen tetrad更多詞組專業(yè)釋義地球科學花粉四分躰辳業(yè)科學花粉四分躰生物學四分花粉