缩短器

A simpler scheme of interference canceler is proposed based on beam space analyzing. It is shown by the numerical results that such scheme can overcome the shortcoming of smart antennas. The time to demodulate desired user is reduced. It also reduce the complexity to realize such an AA/IC system with hardware. In the chapter 5, a multi-beam antenna system with three and six fixed beams are analyzed.

第四章综合考虑了智能天线的空间滤波和级联干扰删除器的作用，提出利用智能天线的空间滤波特性进一步简化干扰删除器的设计方案，数值分析结果表明该方案不但可以克服天线空间滤波的不足，同时缩短了用户信息解调的时间，降低了硬件实现的复杂度。

Results of the cosimulation and the experiment were compared to validate its coinherence. The performance of the damper can be predicted effectively and would shorten the period of research and development as well as lower its cost.

经过验证证明，联合仿真结果与台架试验结果具有良好的一致性，通过仿真可以有效地预测减振器的性能，并达到了缩短减振器研制周期和降低研制成本的目的。

The first disadvantage of MMI device is wavelength sensitive, which leads to restricted applications. To reduce the wavelength insensitivity in optical network applications, the demand of light source with a specific wavelength is needed, especially for power splitters. For this reason, a wideband criterion for MMI splitter is proposed. The basic principle is based on reducing the interference length difference and making it shorter than the spot size for constructive mode interference. Simulation results show the spectra of proposed MMI splitter is wide enough (1.26-1.61um) to cover the fiber communication band and the size of the splitter is more compact than that of the conventional MMI or Y-branch splitter.

多模干涉元件的第一个缺点为波长敏感，此缺点会限制其在实际上的用途；因元件在网路上的应用时，通常都需要降低波长敏感性，以减低对光源波长准确性的要求；有鉴於此，本论文提出多模干涉分光器的宽频标准；基本原理是建立在缩短其多模干涉区的长度差，并使之小於建设性干涉的光点大小；透过模拟后发现，操作频宽可涵盖光纤通信全波段(1.26-1.61um)，且长度小於Y形分支结构的分光器。

Many technical measures have been taken as follows to ensure the safety management: a. operation steps of installing the cross joints are improved to guard against damage on metal sealing and the hanger; b. well logging is applied to gas testing so as to achieve early warning in a scientific way; c. the burning processing unit of QTI3000 is widely used to reduce the bad impact on the environment; d. the articulation of perforating gun is improved to alleviate labor intensity and shorten the perforating time so as to shut down the well promptly in case of any accidents.

在安全技术措施上，改进了坐完井悬挂器操作步骤，避免损坏金属密封，造成悬挂器损坏；将录井技术应用于试气作业，实现了科学预警；推广应用了QTI3000型焚烧处理装置，降低了对环境的不良影响；改进了射孔枪的连接方法，减轻了工人的劳动强度，缩短了起射孔枪时间，能在起钻发生井喷失控前及时控制关井。

In order to make good use of resources in collaborative design and shorten product developing time, the principle on task decomposition with methods of assignment from tasks to dynamic and static teams are proposed on the basis of task decomposition tool.

项目的成功依赖于全体参与者的协同工作，为保证协同设计资源的合理利用及缩短开发时间，文章在分析模块化产品开发过程的基础上，提出了在任务分解器基础上任务分解的原则，以及任务到动态及静态开发团队分配的模型，并在此基础上给出了任务调度器的框架。

In the laboratory study, this project intends to use a more convenient vortex shaker and small scale powder disperser to disperse nanopowders and conduct the dustiness tests. The results will be compared with the standard method hoping to reducce the testing time and cost.

在实验室的研究方面，本计画拟使用较简便的漩涡震荡器与微小粉尘分散器来进行奈米粉体扬尘特性测试，并与标准测试方法作比较，期能缩短测试的时间及成本。

The new mold adopts the plane section instead of the funnel section of H^2 mold bottom, and shorten the length from 2100 mm to 900 mm. By simulating and optimizing the slab stress in molds, a new shape-funnel mold is designed, which have merits of lower slab stress and strain and smooth-transition of curve surfaces.

这种漏斗型结晶器将H^2，结晶器下部的漏斗区改为平面区，结晶器漏斗区高度由2100mm缩短为900mm，并通过模拟计算和优化设计，使结晶器内腔曲面形状各部分平滑过渡，使其具有生产铸坯承受变形应力小的优点。

By comparing the breaking velocity and time between back-up releasor and electronic releaser,the back-up one can quickly break the circuit,shortening the breaking time.

通过后备脱扣器与电子脱扣器在分断速度与分断时间进行比较，提出了后备脱扣器可迅速分断电路，缩短分断时间。

Results The average age of the patients was raised, the advanced age and high risk patients increased, the therapy time from chest pain onset to emergency visit, from emergency visit to catheter lab and from catheter lab to the first balloon angioplasty shortened, and the use of drug-eluting stent, distal protective device,aspiration thrombectomy catheter, injection of glyceryl trinitrate and diltiazem to the coronary artery became more frequent during recent 6 years.

结果平均年龄增大、高龄及高危患者增多，治疗时间窗中各时间段（发病→急诊科→导管室→首次球囊扩张）均有缩短，其中导管室→首次球囊扩张时间缩短显著；药物支架、远端保护装置、血栓抽吸器、预防性冠状动脉联合注射防止无复流药物在近两年增长迅速，无血流发生率、主要心血管事件发生率及平均住院日显著下降，同时溶栓后介入治疗较直接介入治疗各种严重出血并发症无明显增加。

By analysising the datum in different prestressing force of piston spring shows that raising the prestressing force of piston spring only have a small influence on stroke time to keep the other paramters in costant, but the back stroke time will be decreased and the frequency, the percussive energy and the hydraulic efficiency will be increased rapidly.

对不同锤簧予压力下液动冲击器性能变化的试验数据处理、分析得出：在保持液动冲击器的其它参数一定时，增加锤簧予压力对冲程时间影响不大，但可以大大缩短返程时间，大幅度提高冲击频率、冲击功和液动冲击器的水力利用效率，增加锤簧的予压力是提高液动冲击器性能的一种有效手段。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。