acropetal
基本解释
- adj.[植]向顶的
英汉例句
- Acropetal differentiation of the cambium layer continues as the primary root elongates.
形成层的向顶分化像初生根伸长一样在继续进行。 - In the early December, the first bract primordium was formed in the axil scale at the cone base, then bract initiation had occurred in acropetal direction.
12月初，最初的苞片原基在雌球果原基的鳞片的叶腋处产生，之后其由基部向顶部连续发生。 - Usually, two pairs of the fertile bracts in the middle of the cone subtend six ovules, which initiate in an acropetal manner.
在北京 ,雌球果原基 7月分化。 通常一个球果有 4对苞片 ,中部两对可育 ,靠球果顶端一对各产生一枚胚珠 ,其下一对各两枚。 - In Aconitum inflorescences the oldest flowers were functionally female at the bottom of acropetal racemes, while younger flowers were functionally male at the upper positions.
草乌花序是无限花序, 当上部的花处于雄性阶段时, 下部的花正好处于雌性阶段。 - Compare acropetal.
比较acropetal。