雌雄

Length 295 ~ 360 mm; head, neck, chest and upper back for the gray stone; on the back and chest with metal flashing green and purple, back for the rest of the light gray; wings have a black cross on the spot; slate gray tail feathers , To the end of its wide horizontal black spot.

体长295～360毫米；头、颈、胸和上背为石板灰色；上背和前胸有金属绿和紫色闪光，背的其余部分为淡灰色；翅膀上各有一黑色横斑；尾羽石板灰色，其末端为宽的黑色横斑。雌雄相似。

All rats were confirmed that no anterior segment disease before the experiment with slit lamp microscope examination.

材料：健康SD大鼠60只，体质量180~210 g，鼠龄6~8周，雌雄各半，实验前用裂隙灯显微镜检查证实无眼前段病变。

Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end.

精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。

Two polar nuclei move to the micropylar end before sperm is released in a gap between the egg cell and central cell and subsequently taking off cytoplasm one after another. The sperm nucleus moving to the egg nucleus runs faster than the one to the polar nuclei. It fuses with the polar nuclei that are moving towards the antipodal cells at the chalazal end, Images showed the fusion process of male and female nuclei and polyspermous fertilization.

精子释放前，两极核移向卵细胞的合点端；两精子释放于卵细胞与中央细胞的间隙后，先后脱去细胞质，然后分别移向卵核和极核，移向卵核的精核快于移向极核的精核；精核与两极核在向反足细胞团方向移动的过程中完成雌雄核融合。

Illustrations of the male aedeagus and female spermatheca of each species are also given.

文中提供了分种检索表、简要描述和雌雄外生殖器特征图。

Comparative studies of embryology of Camellia : sporogenesis andgametogenesis of C.oleifera, C.japonica and C.ptilophylla were watched carefullyunder LM by means of paraffin slides.

山茶属的比较胚胎学研究：通过石蜡切片，用光学显微镜观察油茶、山茶和毛叶茶C.ptilophylla的大小孢子的发生和雌雄配子体的发育；全面总结山茶属的胚胎学资料，从比较胚胎学角度探讨山茶属的系统学问题。

SD rats 54, female and male, divides into 3 groups stochastically.

SD大鼠54只，雌雄参半，随机分成3组：甲组18只，乙组18只、丙组18只。

As a result of the illumination influence, the amount of flower strobilus in the east side of a tree was the least, and relatively were more in the south side and the west side.

可见，构建马尾松实生种子园过程中，在注重建园材料的生长、材性等重要经济性状的同时，还要注意雌雄球花量选择。

Accordingly, the female and male flower strobilus production and their proper proportion were also important and should be considered when a seedling seed orchard of masson's pine was established.

此外，选择建园立地环境和加强人工管理也是提高马尾松开花量和保证雌雄球花比例，保证种子园稳产、高产的重要措施。

Basic parameters of the populationAt present,the sex ratio of female and male of population of Gloydius shedaoensis is 1.11:1.00,the number of effective populations is 15 074 and age structure is that the juvenile 9.66%,subadult 15.81%,adult 61.08%,and aged adult 13.45%.

种群现有的基本参数蛇岛蝮种群现有的雌雄比为1.11：1.00，有效种群数量为15074条，年龄结构为幼体9.66%，亚成体15.81%，成体61.08%，老成体13.45%。

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。