查询词典 sac

The central portion of an ovule in which the embryo sac develops ;the megasporangium.

珠心胚珠的中心，胚芽囊在此发育；大孢子囊

In second stage,after 2-nucleate embryo sac development,most pollen tubes grow radially around ovules.

在亲和受精过程中，花粉管的生长速度和方向性已成为人们普遍关注的焦点。

Its embryo sac matures about 45 d after pollination.

在培养后期，外源激素对胚囊发育的影响很大。

The neural embryo development and yolk sac larval morphological development of E. septemfasciatus was investigated.

本实验对七带石斑鱼胚体、卵黄囊期仔鱼形态发育的过程进行观察，研究其发育特征。

The development of the embryo sac is Polygonum type with numberous ...

小穗发育雌雄异熟，雌蕊的发育早于雄蕊的发育。

The mature embryo sac has 7 nucleuses in solar greenhouse.

在日光温室条件下形成的成熟胚囊都是7核胚囊。

The development of the embryo sac belongs to the 'polygonum' type.

通过花粉电镜扫描，发现锥栗具有丰富的遗传多样性。

The pollen and embryo sac fertility were controlled by two sets of different genes, and both of them made contributions to F〓 spikelet fertility.

花粉育性和胚囊育性分别出不同的遗传基因控制，两者共同决定小穗育性的高低。

In the gymnosperms the megaspore gives rise to a cell that is termed the embryo sac because of its similarity to the angiosperm structure.

在裸子植物中，大孢子也产生一个细胞，因为它类似于被子植物的胚囊细胞，故也可以称之为胚囊。

Nucellar cells degenerated in advance under low temperature, which resulted in thickened embryo sac wall surrounding the megasporocyte.

低温处理的蝴蝶兰，胚囊发育过程中珠心细胞提前退化，在大孢子母细胞外围形成较厚的胚囊壁。

The labia have now been sutured together almost completely.The drains and the Foley catheter come out at the top.

此刻阴唇已经几乎完全的缝在一起了，排除多余淤血体液的管子和Foley导管从顶端冒出来。

To get the business done, I suggest we split the difference in price.

为了做成这笔生意，我建议我们在价格上大家各让一半。