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But there is a limit to the range of products discounters can stock while maintaining the efficiency of their model, cautions Mr Amoroso.

Amoroso先生提醒道，折扣店要保持其模式的效率，提供的货品种类是很有限的。

Thymus and autoimmunity: production of CD4+CD25+ naturally anergic and suppressive T cell as a key funtion of the thymus in maintaining immunologic selftolerance.

在人、大鼠和小鼠中有大约3%-10%的CD4+CD8-单阳性胸腺细胞共表达CD25表面分子，这些细胞能够阻止包括自身免疫性胃炎、自身免疫性小肠炎和自身免疫性糖尿病等在内的多种自身免疫性疾病的形成和发展［8-10］。

The combinationof propofol and tramadol has good anesthesia effects while maintaining normal cardiovascular functions,reduce the doses of anesˉthesia in operations,and abortive syndromes.

丙泊酚-曲马多复合麻醉具有良好的镇静、镇痛作用，可保持心血管功能稳定，减少麻醉药的用量，预防人流综合征的发生。

Nitric oxide, the most powerful endothelium-derived relaxing factor, has the major role of maintaining angiotasis.

Annexin 1作为MIF和糖皮质激素之间作用的关键性蛋白，有望成为治疗炎症性疾病的新靶点。

It is showed that the mechanism of XSTM was association with inhibiting expression of cell adhesion molecules of endothelium and inflammatory cell infiltrating into vessel wall, promoting fibrinolytic activity,inhibiting platelet adhesion and aggregation, regulating angiotasis, protecting the normal endothelium structure and function, inhibiting collagen hyperplasia and maintaining elasticity of vascular wall.

实验结果表明：消栓通脉颗粒剂具有显著抑制细胞黏附分子——P-选择素的表达，抑制炎性细胞的浸润，促进纤溶活性，抑制血小板黏附、聚集，调节血管张力，保护血管内皮细胞功能，抑制胶原纤维增生，维持静脉壁弹性等治疗作用。

The method includes the following steps: depositing a non-magnetic layer (3) of sufficient thickness; anisotropically etching the non-magnetic layer to form a steep wall of suitable dimensions at the required position of a flux guide; depositing a magnetic material to form a magnetic layer (9) on the wall in such a manner that the magnetic layer has a thickness corresponding to the required track width; removing undesired deposits of magnetic material but maintaining the magnetic layer on the wall; depositing an insulating material (19a) to cover the magnetic layer.

该方法包括下列步骤：淀积足够厚度的一个非磁层(3)；非均质地蚀刻该非磁层以便在磁通引导的要求位置形成适宜尺寸的阶跃内壁；淀积一个磁性材料，以便在该内壁上形成一个磁层(9)，使得该磁层具有对应于该要求的磁迹宽度的一个厚度；去除不希望的淀积的磁性材料而保持在该内壁上的磁层；淀积一个绝缘材料(19a)以便覆盖该磁层。

In recent work done at the University of Hawaii, it was found that BioMax, as the only filter material used in the filter, was instrumental in controlling and maintaining proper water conditions, in heavily loaded test aquaria.

生物过滤介质，作为唯一一个在过滤器中使用的过滤介质，在控制与维持正常的水条件当中是极其有效用的。

Presently, the main harvesting of Arundo donaxl is traditional manual ways, the working conditions are bad, the harvesting efficiency is low and the cost is high. To harvest Arundo donaxl on schedule and maintaining the quality and quantity is key to ensure the bumper harvest and yield, the croppers income and the timely supply as industrial material, the mechanization harvest has been urgent for the industrialization of Arundo donaxl planting and timely harvest.

然而，目前芦竹的收割仍主要采用传统的手工方式收割，劳动环境艰苦，收割效率低且成本高，按期保质保量收割芦竹是芦竹种植场丰产丰收，实现种植场农民增收和保证其作为工业原料来源的关键。

Maternal TGFαmRNA was gradually reduced from oocyte to 8-cell stage and maintaining lower TGFαmRNA level was to morula stage, assumably TGFαmRNA transcription was begun from 8-cell stage with the zygote genome activation.

EGF、TGFα和EGFR mRNA在生殖系统中的表达通过RT-PCR的方法检测了EGF、TGFα和EGFR mRNA在生殖系统中的表达。

Blood-brain barrier, which is formed by a complex system of cerebral microvascular endothelial cells, astroglia, pericytes, perivascular macrophages, and a basal lamina, plays an important role in maintaining the normal functions of the central nervous system.

血脑屏障是由脑微血管内皮细胞、星形神经胶质细胞、外膜细胞、血管周围巨噬细胞和基底膜组成的一个复杂系统，对维持中枢神经系统的正常功能非常重要。

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。