植物的祖先是进行光合作用的单细胞生物，由此产生的植物可能缺乏真正的根、茎、叶和复杂的生殖结构，如花朵。
The ancestors of plants were photosynthetic single-celled organisms that gave rise to plants presumably lacked true roots, stems, leaves, and complex reproductive structures such as flowers.
首先，德国小蠊在生殖结构上，它的每个卵荚含有的卵比其它物种要多得多。
First, the German cockroach has a larger number of eggs per capsule than the other species that infest structures.
雌性生殖结构：在某些同节植物中的雌性生殖组织，通常是一个圆形细胞或气囊，包含一个或多个卵球。
A female reproductive structure in certain thallophytes, usually a rounded cell or sac containing one or more oospheres.
有趣的是在叶状沼兰叶子上发生无融合生殖的结构。
The occurrence of apomictic reproductive structures on the leaf of the bog orchid , is of interest.
有趣的是在叶状沼兰叶子上发生无融合生殖的结构。
The occurrence of apomictic reproductive structures on the leaf of the bog orchid, is of interest .
应用组织学方法观察了雌性空怀双峰驼生殖道的形态结构。
Histo morphology and structure of female reproductive ducts in Bactrian camel were investigated by histological methods.
当挑一只种母做繁殖的时候，繁殖者必须懂得种狗母亲的结构和生殖记录。
When selecting a stud dog for breeding, the breeder must study the structure and the reproductive record of the stud dog's dam.
研究了太白红杉种群的年龄结构、生殖年龄结构、生殖力和生殖值，分析了太白红杉种群的生殖适合度和生殖对策。
The age structure, reproductive age structure, fecundity and reproductive value of Larix chinensis were studied, the reproductive fitness and the reproductive strategy were analyzed in this paper.
文章还介绍了KISS-1、GPR54基因的结构、表达、多态性以及和其它生殖调控因子之间的相互关系。
This review also introduced the structure, expression, homology comparison, polymorphism of KISS-1 and GPR54 genes and their interrelation with other regulators of reproduction.
有趣的是在叶状沼兰叶子上发生无融合生殖的结构。
The occurrence of apomictic reproductive structures on the leaf of the bog orchid, is of interest.
报道了闽江口海域鳓鱼的生殖群体结构、生长特性、死亡参数和繁殖、摄食习性等生态学资料。
The structure of reproductive stock, the growth character the mortality parameter and breeding, feeding habits of Chinese herring in the estuary of Mingjang River are reported in this paper.
然后从立法目的、立法主体及权限、立法结构、立法方向及理念等方面对我国人工辅助生殖技术行政立法体系进行构建。
Then from the legislative intent, legislative bodies and authorities, legislative framework, legislative direction and philosophy to build the legislative system of assisted reproductive technology.
测定分析鱼类生殖力、产卵期、繁殖群体的年龄结构及产卵类型。
The spawning times, absolute fecundities, age structures of breeding population, and spawning types of fish were also studied.
若将肿瘤、下尿路、生殖系统以及上述结构作广泛整块切除，可提高治愈率。
If the tumor, lower urinary tract, reproductive system and these structures widely block resection, can improve the curative rate.
应用组织学方法观察了雌性空怀双峰驼生殖道的形态结构。
Study on the crystallization properties and morphological structure of cationic dyeable polypropylene fibers;
花集中生长于茎的顶端呈现一大荚簇。特异株型结构使大豆在生殖生长时期的源库供应关系较为合理，降低了大豆花荚脱落率。
The petiole length is shorter. (3)The inflorescence growth at the top stem and form a big podtuft . The special plant-types make the …
花集中生长于茎的顶端呈现一大荚簇。特异株型结构使大豆在生殖生长时期的源库供应关系较为合理，降低了大豆花荚脱落率。
The petiole length is shorter. (3)The inflorescence growth at the top stem and form a big podtuft . The special plant-types make the …
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