基本解釋具雙珠被的同根派生 bitegminous相關(guān)詞英漢例句The ovule is bitegminous and tenuinucellate.The archesporial cell locates under the nucellus epidermis, which develops into fuctional megasporocyte. 孢原細(xì)胞位於珠心表皮之下,直接起大孢子母細(xì)胞的功能。The ovule is bitegminous, crassinucellate and anatropous.The megaspore mother cell divides into linear megaspore terad after meiosis. 大孢子母細(xì)胞減數(shù)分裂形成線形排列的4個大孢子,郃點(diǎn)耑大孢子具功能。bitegminous更多例句