趋

Results: Subjects with severe asthma were more symptomatic,had a lower FEV1, and had more sputum neutrophilia (p = 0.007)and eosinophilia (p = 0.001). Exhaled nitric oxide was similarbetween groups.

本试验证明重度哮喘患者痰中中性粒细胞增多和嗜酸细胞增多更明显，且气道内细胞因子和趋化因子的表达也不同于中度哮喘。

Under low stress repeated impact load, the plastic deformation of materials is epistrophe which is mainly in the range of 2mm under surface.

材料在低应力多冲条件下的塑性变形表现出"趋表"的特点，塑性变形主要集中在表面以下2mm左右的区域。

The structure,voltage-dividing theory and design method of the load were presented. The influence of skin effect on the load's resistance in high frequency was analyzed. The distribution of electric-field intensity in the load and vacuum cavity was calculated. The equivalent capacitance and inductance of the load were calculated,of which the influence on the output waveforms was simulated using Pspice program.

介绍了电阻分压器型负载的结构、分压原理和设计方法，分析了高频作用下趋肤效应对负载阻值的影响，计算了负载和真空腔内的电场强度分布以及负载的等效电感和等效电容，利用Pspice程序模拟了回路参数对输出信号的影响。

In order to avoid introducing errors existing in full state observer, for flexible structure with immeasurable states a equivalent system is constructed which only takes the past inputs and outputs of the original system as the states. Multi-step predictive optimal method is required to solve the convergence law of sliding surface.

针对模态不可测的挠性结构，为了避免设计状态观测器以及引入观测器误差，从原系统构造了仅利用过去的输入和输出信息作为状态的等价系统，用多步预测滚动最优的方法求解滑动平面的趋近律。

Objective:To explore the influence of infection on the erythrocyte chemokine receptorbinding activity in severely scalded rats.

目的：探讨感染对烫伤大鼠红细胞趋化因子受体结合活性的影响。

The expressive way of ethnographical text and language are becoming more diverse and "science" with the development of fieldwork.

在田野工作的推动下，民族志文本和话语的表述方式渐趋多样性和科学性。

Theoretically, Europeanization should lead to convergence, but in reality it is divergence.

从理论上讲，欧洲化应该导致趋同的结果，但实际中却是趋异了。

Finally, the gestures E Herder paints with neutral lacquer on pressed board attest to the truth of impermanence as they seem to evanesce leaving only their burnt shadows as proof of their brief existence.

最终，易鹤达在压力版上使用中性油漆所表达的形式，证实着短暂而无常的真实，正像这些色彩渐渐消失在它们的渐趋黯淡的光彩中，是一个短暂存在的证明。

Over the past thirty years, a number of exogenous and host-derived chemoattractants have been identified.

在过去的近三十年中，发现了一系列外源及内源性的趋化物质。

Beijingensis under three droughttreatments, normal, moderate and severe stresses. The results showed:(1) the canker disease ofboth cultivars was serious gradually with increased drought;(2) the bark tissue cells sufferedplasmolysis, more evident with the severity of drought stress;(3) under the drought andinoculation with B. dothidea, cells of two cultivars damaged at different degree, mailyrepresented in the changes of organelles, such as chloroplast swollen and distorted, number ofmitochondria increased and membrane system indistinct; then organelles suffered furtherdamagement with inoculation time, thinned mitochondrias stroma, decreased cristae, crumpledand partly broken membrane of chloroplasts with stroma exosmosis. At last, the chloroplastspartly disorganized;(4) the hyphae growed mainly intercellular in resistant cultivar and notonly intercellular but also intracellular in susceptible cultivar, which directly caused thenecrosis of cells;(5) under the severe drought, the damage of cells enhanced the infection ofpathogen and drought and pathogen stressed together and promoted the disease development;the damage from pathogen on cells was more serious than that from drought.

结果显示：(1)随着干旱胁迫程度的增加，2种杨树溃疡病害发生渐趋严重；(2)干旱胁迫下，杨树树皮组织细胞发生质壁分离，并随胁迫程度的增加而严重；(3)干旱胁迫下接种病原菌，2种杨树细胞发生不同程度的损伤，主要表现为细胞器发生较大变化，如出现叶绿体肿胀变形、线粒体数量增多，质膜模糊不清等现象；随接种时间的延长，细胞器受到进一步损伤，叶绿体被膜折皱，严重时局部破裂，基质外渗，并部分最终解体；(4)毛白杨中的菌丝主要在细胞间隙中穿行，而北京杨的菌丝除在细胞间隙中生长之外，侵入细胞内部也较多，直接导致细胞的解体；(5)干旱胁迫下细胞的损伤促进了病原菌的侵染，干旱和病原菌的双重胁迫加剧了病害的发生程度，并且病原菌侵染对细胞的破坏程度大于水分胁迫。

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。

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