作用的

It is found to relate to atherosclerosis, increasing tension of coronary artery, coronary vasospasm, coronary thromboses and vascular restenosis after percutaneous transluminal coronary angioplasty that endothelium reduce generation and re lesae of EDRF/NO.

随着内皮分泌功能的发现，人们逐渐认识到内皮不仅仅是具有单纯弥散屏障作用的细胞成份，它还有：1、调节血管舒缩；2、防止血栓形成；3、大范围的激素调节；4、促使或抑制内皮本身和血管平滑肌细胞的增生；5、调节儿茶酚胺、血小板产物的代谢和失活等作用。

A detailed analysis of the experimental results implied that the attractive forces play a main role in the collisional quenching processes of NCO by the quenchers studied in this work, and for some quenchers, the quenching of NCO is probably controlled by the entrance-channel and might be ascribed to the contribution of chemical reactions.

对实验结果的分析表明，电子激发态NCO A〓Σ〓（00〓0）的猝灭过程可能属于多极吸引势起着重要作用的入口通道控制机制，对于大多数被研究的猝灭剂分子，化学反应在其对NCO自由基的猝灭过程中可能起着重要的作用。

By using the results from systemical petrography, X-ray powder diffraction, and EPMA analyses on the run products from experimental simulaion under constant temperature and pressure, we have explored the paragenesis for the pelites suffering metamorphic dehydration under high pressure condition, the process and mechanism for these metamorphic dehydration, and the relation between the components for garnets, one of the major phases in the paragenesis, and the experimental conditions including pressure, temperature, and chemical compositon in a system.

由恒温、恒压实验产物系统的岩相学、X射线粉晶衍射和电子探针分析，揭示了天然泥质岩发生高压变质脱水作用后的矿物相组合，确定了泥质岩高压变质脱水作用的过程和机理，以及主要矿物相石榴子石的组成与压力、温度和体系化学组成的关系。

Our works discuss the magnetic characteristics of wasp-waisted hysteresis loops and outline a rationale for this type of behavior by superposition of hard and soft magnetic phases. Because of the absence of magnetic interactions between particles, in measurement procedure, we could sum the magnetization mathematically of the isolated particles at each field value to create a composite hysteresis loops.

进一步再以复合模型磁相叠加的特性，以考虑忽略软硬磁晶粒间彼此交互作用的前提下，将软磁与硬磁的磁滞曲线以线性叠加得到不同磁场强度下各材料的磁化强度以描绘出该复合模型的磁滞曲线，并发现磁相叠加与实际量测的磁滞曲线虽相近但仍有其差异，而其差异则系由於软硬磁混合样品中其晶粒间仍有交互作用之存在。

Carding theory of high production carding machine is discussed from the history of carding machine,the basic function of cotton-feeding and taker-in parts,carding degree,carding work and average carding specific work of taker-in,the law of airflow movement under the taker-in.

文章从国内外梳棉机的发展历史；梳棉机给棉与刺辊的基本作用；刺辊的梳理；刺辊梳理度、梳理功、平均梳理比功；刺辊下气流运动规律等方面进行了详细阐述，从而加深了人们对梳理发展历程的认识，也有助于对给棉与刺辊部分作用的理解。

Valve in operation, the friction surface at the same time as a result of mechanical action and Metals and the Environment to carry out chemical or electrochemical interaction of wear and damage results.

阀门在操作过程中，摩擦的表面由于同时的机械作用和金属与环境进行化学的或电化学的互相作用的结果产生磨损和破坏。

The results show that:(1) The space-charge fields(include dc space-charge fields and ac space-charge fields) have important effect on the beam-wave interaction output power, make the saturated output power lower, saturated position delay;(2) The back-radio excited by the electron beam has little effect on the output power, and can be ignored;(3) The transverse motions of electron beam has some effect of the output power;(4) The means of phase velocity taped and bunch compression can improve the relativistic TWT efficiency, especially bunch compression can greatly improve the efficiency.

五、分析了相对论行波管三维非线性特性，分析结果表明：(1)空间电荷场（包含直流和交流空间电荷场）对注波互作用输出功率影响很大，会造成饱和输出功率减小，饱和位置推后；(2)电子注激发的反向辐射对输出功率影响比较小，基本上可以忽略不计；(3)电子注横向运行对注波互作用的直接影响比较大；(4)通过改变耦合腔内半径来调节慢波结构相速，采用相速跳变和预群聚的方法可以改善相对论行波管的效率，特别是采用预群聚方法，可以尽量提高相对论行波管的效率。

The self-view of the object being shot,which was put forward after the value of documentary films being expounded in this article,was consistent with author's creative intentions to a certain extent.

纪录片被称为是&电视中的贵族&，在具有强烈娱乐功能的电视领域之内，纪录片承载着一个与电视本体特征不甚完全吻合的作用，也恰恰因为这种作用的存在，彰显着纪录片独一无二的视觉价值，并在这种价值中不断完善自己，不断发展自己。

The freeze-thaw gradually occupies the main position in the sub-continental and marine periglacial processes with the water and temperatures increasing while the other weathering processes are retreated. This is also be explained from the experimental analyses result.

随着水分条件在亚大陆型和海洋型冰缘过程的加强以及温度的增高，冻融作用才在其冷生风化组合中占据了主导地位，而其它作用的效果则明显下降，并从模拟实验结果的角度初步解释了这种现象的成因。

Recently, the cDNA encoding PTA1 has been cloned from activated Jurkat cells by Sherrington and show it to be a novel member of the immunoglobulin superfamity with the unusual structure of two V domains only. This result provided a fundamental base for further study on PTA1 functions and its ligand identification.

从核苷酸推导的氨基酸序列表明PTA1由334个氨基酸组成，先导序列18个氨基酸，成熟PTA1分子为316氨基酸，胞膜外区232个氨基酸有两个Ig样结构域，属于免疫球蛋白超家族成员，胞浆区59个氨基酸中，含有3个酪氨酸，6个丝氨酸和6个苏氨酸，有PKC和PTK作用的基序，这些特征都与PTA1分子的功能密切相关，因此PTA1 cDNA克隆成功为进一步深入研究PTA1分子的作用机理奠定了坚实的基础。

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。