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The mechanical property testing shows that the seamless PLLA tubes perform excellent radial strength,which indicates that the mechanical properties of biodegradable stents made of these tubes was supposed to be excellent.PLLA and its composites were first used in preparing seamless tubes as antecedency of laser-cut biodegradable coronary stents in china.Finite element analyses of the biodegradable coronary stent model indicate the explorative design basically meets the requirement of reasonable and applicable stents.There is not such kind of research yet in domestic.Optimum laser-cuttting parameters of CO2 laser was cauculated based on experiential formula,within it,biodegradable coronary stents,especially those with complex structure would be manufacutured from seamless tubes quickly by laser microprocessing with high consistency to the design model.The processing efficiency of the CO2 laser demonstrated in experiential formula by us will play an important guiding role in manufacturing biodegradable stents by laser-processing.Our stents that ascribed to laser-cutted,slotted tube stent are proved to be biodegradable, self-expandable and good biocompatible,basically reach the international level on the aspest of manufacturing procedures and design.

研究结果表明：壳聚糖改性材料综合性能优于纯PLLA，更适合于作为可降解冠脉支架的原材料；自主设计的探索性自膨胀管状闭环型可降解冠脉支架的性能符合冠脉设计要求，设计、验证生物可降解冠脉支架模型的研究在国内还未见报道；制备的改性PLLA无缝管的力学性能优越，可通过激光切割获得冠脉支架，这是国内首次采用聚乳酸材料来制备通过激光加工出可降解冠脉支架的无缝管；二氧化碳激光器加工精度能达到加工要求，加工出来的血管支架名义设计与实测值误差小，实现了冠脉支架、尤其是带有复杂外观设计冠脉支架的快速化、规范化加工，对二氧化碳激光器加工聚乳酸材料的效果研究在国内外属于首创，获得的经验公式对日后的深入研究有重要的指导意义；制备的支架为激光切割管状闭环型冠脉支架，支架外观设计、支架加工手段、支架的性能都基本接近国际水平，支架样品符合设计的理念，可以实现自膨胀功能。

That type of antenna has the advantages of simple structure and high efficiency.

这类天线的优点是结构简单，效率高。

MIMO antennae system is one key technology which has enhances frequency efficiency and system capacity.

其中的多输入多输出天线系统是一种可以有效提高频谱利用率、系统容量的关键技术之一。

By virtue of behavior experience in human society and the characteristics of pervasive computing,in addition,according to dynamic transformation discipline between the lag of trust and the anteriority of service,a trust-based model cascade servers is put forward while trust relatiuon establishment,trust degree estimation and update are depicted.The best server satisfied with the user's request is selected out by means of cascade servers to improve the service of quality and efficiency such as multiple evaluation to trust degree dynamically by direct and indirect methods（the third party's recommendation）,which conquers the disadvantage that a singular equipment can't satisfy the request property and blindfold choice of service.

借鉴人类社会行为关系的规律和普适计算环境的特点，依据信任的滞后性和服务的前瞻性矛盾的动态演化规律，提出普适计算环境中信任关系的建立、信任度的衡量和更新以及基于信任的级联服务模型；通过直接和间接的方法动态地对信任程度进行多角度评估，以级联服务的方式从众多可选择的服务目标中筛选出最符合用户要求的服务，克服了单一设备不能完全满足服务请求属性和服务选择盲目性的缺点，提高服务的质量和效率。

The experimental results indicate that the catalytic decompose efficiency of anthracene reduced linearly with reaction temperature and the concentration of anthracene increased.

实验结果表明：随着催化反应温度的升高，蒽的催化分解效率呈下降趋势，而且呈大致的线性变化规律；蒽的催化分解率随蒽的浓度呈线性递减规律；蒽在V_2O_(5~-)WO_3／TiO_2催化剂上具有良好的空速特性。

Along with the age of automatization and high-efficiency in the apparel industry, as a very important basic task in apparel design, anthropometry has been developed fast.

随着服装行业自动化、高效率时代的来临，作为服装设计过程中一项十分重要的基础性工作，人体测量也有了长足的进步和发展。

The influence of cold water temperature and anticorrosive coating on the thermal efficiency of water heater is studied.

研究了冷水温度和防腐涂层对热水器热效率的影响。

Efficiency of antiepileptic treatment may be related to effective therapeutic concentration.

结果 癫病人稳态血药浓度达有效治疗浓度范围的人数为35.40％，与年龄、性别无关。

Then the three feeding models of antifoam were compared by their efficiency and consumption.

在此基础上，分析比较了3种消泡剂流加方式的应用情况。

There is fluorescence resonance energy transfer between the intrinsic tryptophan and MIANS that labeled on Cys residues of ArsA, antimonite can increase the efficiency of energy transfer.

ArsA内源色氨酸和标记于Cys上的MIANS之间存在荧光能量共振现象，SbO〓能够增加它们之间的能量共振转移效率。

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。