外内胚层的
- 与 外内胚层的 相关的网络例句 [注：此内容来源于网络，仅供参考]
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Morphorgenesis and differentiation of these organs involves sequential and complex interaction between ectoderm, mesoderm and endoderm.
这些器官的成型与分化，皆是由胚胎外、中、内三个胚层组织一连串的讯息传递以及彼此之间的交互作用所完成的。
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The results were:1The mean somatotypes in male 2.2\_4.5\_2.4 and female 4.3\_4.2\_1.5 are balanced mesomorph and endomorph-mesomorph,respectively.2Very significant sexual difference is found in adult's of Dong nationality(P.001) while SAD and T are 2.33 and 11.9 respectively.3Compared with the data home and abroad,the somat...
结果表明：1 侗族成人男女的平均体型值分别为 2 2— 4 5— 2 4和 4 3— 4 2— 1 5 ，侗族成人男女分别属均衡的中胚层体型和内胚层—中胚层均衡体型；2 侗族成人男女间SAD值为 2 33，T为 1 1 9，男女间的体型有非常显著性差异(P 0 0 1 )；3与国内、外资料相比，侗族男女的内、中因子值和男性外因子值居中，女性外因子值最低
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The 28S rDNA molecular phylogenetic trees showed: 1 entoprocts and phylactolaemate ectoprocts constituted a sister group, strenghthening the opinion that entoprocts should be reunited into phylum Bryozoa; 2 the cheilostome gymnolaemates was obviously non-monophyletic; 3 bryozoans itself was polyphyletic beyond any doubt, its main lineages were scattered in different positions of the lophotrochozoan trees; 4 to our great interests, the phylogenetic position of cheilostomes was between the diploblastic and the triploblastic, indicating they may play an important role during the evolution route from the diplobastic to the triploblastic animals.
28S rDNA分子系统树显示，内肛动物和被唇类外肛动物聚在一起并互为姐妹群，支持将内肛动物重新归入苔藓动物门的结论；唇口目裸唇类外肛动物绝非单系发生；苔藓动物本身也不是单系发生的，其主要类群分别位于触手冠担轮动物系统树的不同位置，特别是，唇口目苔藓动物的系统地位介于二胚层动物和其它三胚层动物之间，可能是二胚层动物向三胚层动物演化过程中的一个关键类群。
- 推荐网络例句
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It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.
从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。
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The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.
集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐
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The eˉtiology of hemospermia is complicate,but almost of hemospermia are benign.
血精的原因很，以良性病变为主。