In the paper, the write mainly introduces the latest situation of the parallel mechanism research home and abroad, its using field and the development trend as well. Moreover, the writer put forward the concept of 3-PRS Parallel Structure Axis.3-PRS parallel structure axis are that one kind takes parallel organization as structure 3 liberty degree chief axis component of piece, but apply to the numerical control machine tool forming many coordinates rapidly.
本文介绍了国内外并联机构机床的最新研究状况，应用领域和发展趋势，提出3—PRS并联结构主轴概念。3-PRS并联结构主轴是一种以并联机构为结构件的3自由度主轴部件，可应用于快速组建多坐标的数控机床。
As a specialized manufacturer with month output for 500, 000 prs, we now process 4 most advanced vulcanizing lines, 2 cementing lines and 1 goodyear welting line, also we are now enlarging our scale, improving our development ability、production capacity and market service. our products have got high reputation from customers home and abroad for their well-chosen material, fine craftsmanship, elegant styles, high quality and outstanding market service.
作为月产量50万双的专业生产商，因其精心的选材、精细的工艺、精美的造型、稳定的质量及良好的售后服务深受国内外广大客商的好评。立丰现拥有4条硫化线、2条冷粘线及1条固特异线，并在不断扩大规模和提高研发技术、生产能力及服务水平。具有十多年制鞋历程的集开发、生产及贸易与一体，年产值高达2亿人民币的大型港资企业。
After that, the one-stage PRS is connected with the chemical laser system to test cooperation of the two systems. Tests show that the ejecting capacity of the one-stage PRS is unable to fulfil the exhaust requirement of the chemical laser system, and that the starting process of the cavity and the diffuser is not thorough and the cavity pressure is too high, with the power output of the laser decreasing sharply.
随后，开展了单级引射PRS系统与DF化学激光器的联试研究工作，通过大量的联试实验，研究了激光器配方、引射器引射能力、联试时序和扩压器方案等等，对扩压器和光腔的启动特性、光腔压强和出光功率的影响，得出了光腔压强过低、单级引射PRS系统无法满足其压缩比要求，需考虑采用两级引射PRS系统的结论。
Under the condition of high ejecting Mach-number, the discipline of the starting performance of the annular supersonic ejector is learned and compared with that of the center supersonic ejector. During the time, the gas-generator is developed successfully. After that, the one-stage PRS is connected with the chemical laser system to test cooperation of the two systems.
随后，开展了单级引射PRS系统与DF化学激光器的联试研究工作，通过大量的联试实验，研究了激光器配方、引射器引射能力、联试时序和扩压器方案等等，对扩压器和光腔的启动特性、光腔压强和出光功率的影响，得出了光腔压强过低、单级引射PRS系统无法满足其压缩比要求，需考虑采用两级引射PRS系统的结论。
Prsˋprt affluence prsˋprt The peace and prosperity of the world in the next century depend in many ways on what Beijing does.
下一世纪的世界和平与繁荣，在许多方面都取决于北京的行为。
The aim of this project is to develop a deliverable PRS System to satisfy the special return applications of the company.
本项目的目的是开发一个可交付使用的人员申请系统，以满足企业内来自全国各地分公司的人员申请流程。
We offer to you the low minimum order more than 12 prs per.
我们为你们提供最低为每册12多。
These foreigners were given PRs and citizenship in less than 2.5 years and they don`t even need to serve.
而这些外国人不需要两年的时间，就能获得永久居民或公民的身份，他们甚至不需要为国家完成国民服役。
So do you know at what intervals does Google updates PRs?
所以你知道在什么时间间隔不谷歌更新减贫战略？
I felt horribly inadequate. I do not hate PRs.
我觉得自己不够资格：我并不厌恶搞公共关系的人。
Do You See PRs Real Value?
你看到减贫战略的实际价值？
Main Products: PRS refined C5 petroleum resin PRS Series refined C5 petroleum resin series are the company's long-term efforts to develop advanced technologies in order to by-product ethylene cracker C5 group is divided into raw materials, the use of continuous automated production process, refined by the C5, catalytic polymerization process such as production of high quality transparent particulate organic polymer.
主要产品：PRS精C5系列石油树脂 PRS精C5系列石油树脂是本公司经过长期努力开发的先进技术，以乙烯裂解副产物C5组分为原料，采用连续自动化生产工艺，经C5精制、催化聚合等过程而生产的具有较高品质的透明颗粒状有机聚合物。
Of 17 objective responses, nine (38%) were partial responses, including two that were greater than 90%. Five patients (21%) had ORs lasting more than five months. Clinically meaningful PRs occurred in five of seven patients with pancreatic cancer, and in all three with neuroendocrine cancers.
其他与70 mg/m2的CIS有关的副作用包括第III级的耳毒性，以及三名患者中有二人出现第二级的神经病变，因此研究人员估计CIS的最高容许剂量为60 mg/m2，并且建议以此剂量作为第 II 阶段的研究剂量。
In this paper, analyses the inverse kinematic model and the workspace`s restraint condition of the 3-PRS parallel robot, searches the workspace of 3-PRS parallel robot by borderline limits numerical search method, and gets the 3 dimension simulation chart of workspace by Matlab.
本文分析了3-PRS并联机器人机构的位置逆解及工作空间的约束条件，采用极限边界数值搜索法求解了3-PRS并联机器人工作空间，并利用Matlab对其工作空间进行三维仿真分析。
After many years of hard work, fast development and great improvement, we have possessed corollary equipments and detecting instruments. PRS has received well-reputed from the worldwide customers through responsive service and on-time delivery.
公司已拥有配套完善的各种生产设备和检测仪器，能够为全球用户提供内径在4000mm以内的各种产品和高质量的服务；同时快捷、高效的服务赢得了国内外客商的好评。
The requirement to develop the high performance, high compression-ratio PRS is put forward. Secondly, the one-dimensional theoretical models of supersonic ejectors are developed. Based on it, the performances of all kinds of supersonic ejectors are compared and the effects of variety of input parameters on the performances of supersonic ejectors are discussed.
接着，推导了超声速引射器各种一维理论模型，并应用一维理论公式分析、比较了各种超声速引射器的性能及其变化规律，全面探讨了各设计参数对超声速引射器性能的影响，得到了高性能、大压缩比引射器系统应该采用小引射系数、高引射马赫数、燃气引射、优化超声速引射器设计方案的结论。
Main Products: Marine air bottles, pressure tank, foam tank, reservoir pump, ash cans, mufflers, speed control area closed valve boxes and other access to CCS, DNV, LR, BS, GL, BV, KR, NK, RINA, PRS and a number of plant classification society approval or product approval.
主要产品：船用空气瓶、压力水柜、泡沫罐、储气筒、灰罐、消音器、速闭阀控制区箱等获得CCS、DNV、LR、BS、GL、BV、KR、NK、RINA、PRS等多家船级社的工厂认可或产品认可。
In people-oriented to quality survival, winning integrity, customer service to the principle of the company since March 05 has been established only a year's time, the company's own research and development of the PRS Series HTF rotary joint greatly favored customers and Became the industry's Award.
本着以人为本、以质生存、诚信制胜、服务客户的原则，自公司05年3月成立至今仅一年的时间，本公司自行研发的PRS型系列导热油旋转接头倍受客户的青睐并一跃成为该行业的领航者。
Has established the Avey rhzomorph through the field test remains the analysis method in the sea cabbage and the soil, and remained to it in the sea cabbage and the soil has carried on the determination, the sample with the methyl cyanide extraction, after extracting the revolving concentration nearly did, with the few methyl cyanides dissolves, passed through PRS the solid phase extract column to purify again, eluent air-dried after the nitrogen with the nitrogen methyl imidazole and the trifluoroacetic acid bitter wine grows, the derivative with the highly effective liquid chromatography analysis, used the external standard legal quantity.
通过田间试验建立了阿维菌素在甘蓝及土壤中的残留分析方法，并对其在甘蓝和土壤中的残留进行了测定，样品用乙腈提取，提取液旋转浓缩近干后用少量乙腈溶解，再经PRS固相萃取柱净化，洗脱液经氮气吹干后用氮甲基咪唑和三氟乙酸酐衍生，衍生物用高效液相色谱分析，采用外标法定量。
Instead, these amplifiers are connected to the Praesideo network via the PRS-16MCI Multi Channel Interface, which provides the
它通过为其提供音频信号且对其拥有完全控制权的 PRS-16MCI 多通道接口连接至 Praesideo 网络。