系统发生的

Then, under the control of systemic factors, mesenchymal cells aggregate and differentiate to form catilage blastemal elements that prefigure skeletal limb components.

脊椎动物胚胎期骨与关节系统的发生是一种复杂生命现象，起始于中胚层间充质细胞的定向聚集，形成肢芽，然后在一系列作用因子的调控下，肢芽内细胞进一步分化，形成具有骨骼雏形的软骨原基，后者经软骨内骨化发育成骨。

Cerebrovascular diseases,characterized by high incidence and mortality,represent one of the most frequently occurred neurological diseases clinically,so it is of vital importance to instruct catechumen to precisely and systematically grasp related knowledge ranging from its pathogenetic mechanisms,clinical manifestations to treatment and prognosis in a short period.

者已从教学手段、教学内容和教学管理体制等方面做了一定的探索和尝试【，但由于多数脑血管病从发病到预后有其内在的特点，且由于我国现有医疗状况的制约，临床初学者尚难在短时间内充分、系统掌握脑血管病的病理发生机制、临床表现、治疗及预后。

Doug de Groot, who works on computer-generated beings called avatars and other types of digital "life" at Leiden University in the Netherlands, says Bell's system could eventually form the basis for "meet the ancestor" style educational tools, where people will quiz their ancestors on what happened in their lifetimes.

Doug de Groot，在荷兰来顿大学从事计算机产生人的研究，该项研究被称作&人的化身和其他数字化'生活'&，他说 Bell 的系统可以最后为&与祖先会面&教育性工具建立基础，人们可以用它考查他们祖先的一生曾经发生过什么。

The biometallogenesis system of Jinya gold deposits consists of the following procedure: pre-concentration of gold and metallogenic matter in living organisms in Luodian-Danchi rift depositional basin; solution, absorption and concentration of metallogenic matter in organic matter and organic thermal fluid generated from organisms during lithogenesis; migration of gold and metallogenic matter in organic fluid from basin to Lingyun underwater carbonate platform and concentration at its boundary convex (palaeo-blind-mountain) during basin compaction ; metallization due to depth thermal fluid making organic fluid thermal degradation and forming new fluid which riches in gold and sulfur, and the fluid migrating upward and depositing in upside ore-controlling structures because of absorptions by organic carbon and atc.

通过研究金牙金矿作用的生物成矿系统内容为：在早、中三叠世罗甸—丹池裂谷盆地接受沉积时，生物对金等成矿物质就存在预富集作用；在成岩过程中，生物转化为有机质及有机热流体，对生物及沉积物中的金等成矿物质存在溶解、萃取、富集作用；在盆地压实成岩作用中，盆地中有机热流体向凌云水下碳酸盐台地运移，并在台地边缘外凸部位集中，此过程流体携带大量成矿物质，对金等成矿物质存在迁移集中作用；深部热流上侵使有机流体发生降解和释放金的热作用、形成高含金的有机热液，含金热液上移在构造通道中沉积并被有机碳再次吸附，最终形成金矿床，对金存在成矿作用。

Western Blot indicated that AIF was selectively released before cytochrome C from the intermembrane space of mitochondria to cytosol, and that release needed Bax relocation to mitochondria. Results above suggest that caspase-independent cell death maybe occurred earlier than caspase-dependent cell death in staurosporine induced T lymphocytes apoptosis. Caspase-independent cell death is an alternative pathway of cell death which could guarantee the safe and noninflammatory removal of corpses when caspase was mutented or blocked in the cell, it plays an important role in maintaining the number of T lymphocytes and ensuring the proper function of immune system.

细胞caspase非依赖死亡方式可能是Caspase依赖性死亡方式的替代途径，它可以保证在Caspase发生突变或通路受阻时，T细胞仍然能够正常死亡，这对于维持T细胞的数量和保证免疫系统正常功能的发挥具有十分重要的意义。

T is phenotypically similar to the systemic acquired resistance induced by the infection of pathogens, and with the same efficiency but without hypersensitive response and visible symptoms in plant as SAR, which is helpful to open a new way to develop and improve safer and environmentally friendly strategies for plant protection.

SR具有非特异性、广谱性和系统性，其在表型上与病原菌侵染激发的系统获得抗性相似，具有同样的效率；但在寄主植物上不发生过敏性坏死反应，无可见症状，为发展和改善更加安全而环境友好的植物保护策略开辟了新的思路。

In comparing the floral morphogenesis with that of other genera with T-type chromosomes in the family, we considered that Coptis contains some primitive characters. The results are consistent with molecular systematic studies showing Coptis as one of the basal groups of Ranunculaceae.

通过与其它具T-型染色体类群在花形态发生上的比较，认为黄连属表现出了某些原始的性状，这一结果与分子系统学研究认为黄连属为毛茛科的基部类群的结论一致。

The longer the virus circulates the way it does in poultry production systems and in ducks, the higher is the probability of exposure of humans and if we are indeed unlucky and have human influenza at the same time, there is increased likelihood of reassortment and therefore of the generation of pandemic.

病毒在禽类生产系统和鸭子中传播的时间越长，人类接触到病毒的可能性越大。如果我们不幸同时患有流感，这两类病毒之间再组合的可能就会增加，因此发生流行病的可能性也会增加。

Some conclusions are drawn which by analyzing the experimental data.There are seriate pores with continuous diameters in the coal, some of which are fracture-type.The pore volume of the coal is mainly...

分析表明，大同煤具有连续的完整的孔系统，且部分孔为狭缝毛细孔；孔体积主要由大孔和中孔构成，比表面积主要由小孔和中孔构成；随着颗粒粒度的减小，煤粉的孔隙结构发生变化，致使比表面积和孔容积均增大，平均孔直径减小。

Materials and Methods Rabbits were subjected to stereostatic impact brain injury of moderate to severe severity.

海洋具有与大陆环境完全迥异的生态系统和理化特征，对于发生在海洋下的开放性颅脑创伤，高渗、富含各种电解质的海水对创伤脑组织的浸泡会对创伤病理生理产生影响。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。