查询词典 gynostemium

In first stage,from the beginning of pollination to megaspore tetrad,pollen tubes grow axially,passing through gynostemium to the ovary and from proximal placenta along ovary wall develop upward.

花粉在柱头上萌发和生长后，花粉管沿着花柱一直延伸到子房，进入胚囊释放精细胞，实现精卵结合，这就是亲和受精过程[1]。

Male flowers: perianth tube basally solid; stamens 20, connectives completely united to form a stalked cup; anthers inserted on outside at base of cup, surrounding column base; gynostemium rudimentary.

雄花： 基部的花被筒实心；雄蕊20，药隔完全形成一个柄杯的；花药着生于在杯状的基部外边的，围绕柱状的基部；合蕊柱不发育。

Anthers oblong, 3-4 mm. Gynostemium 3-lobed.

花药长圆形，3-4毫米合蕊柱3浅裂。

Stamens 6-12, in 1 or 2 series; filaments adnate to ovary or style column with anthers free, or filaments and anthers fully adnate to style column to form gynostemium; anthers 2-loculed, dehiscence longitudinal.

或在1方面，雄蕊6-12系列；花丝贴生到子房上或者贴生到圆柱状花柱上，且花药离生，或花丝和花药与花柱合生形成合蕊柱。

Stamens 5 to very numerous, in 1-3 series, fused with the rudimentary pistil into a gynostemium or in bisexual flowers connate into a cylinder; free filaments absent; anthers 2-loculed, dehiscent longitudinally or by apical pores.

雄蕊5 到多，1-3 列，退化雌蕊愈合成合蕊柱或两性花合生成圆柱体无离生的花丝；花药2室，纵裂或者凭借顶孔开裂。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。