达到目的

For the aim of saving energy and optimizing control of chilled systems, the performance of VWV systems and characteristics of control systems were analyzed based on the simulation. According to the characteristic of the monitored parameters and controlled variables in VWV systems, three online optimal control strategies were proposed and validated:(1) Optimal strategy for on/off control of chillers according to the ratio of secondary flow rate to primary flow rate.(2) Optimal strategy for the control of secondary pump according to value positions of auto-controlled AHU vales. And (3) Optimal strategy for supply chilled water temperature control of chillers according to valve positions of auto-controlled AHU valves and working status of secondary pump.

为达到节能和优化系统控制的目的，在楼宇空调水系统及其局部控制仿真分析的基础上，针对变流量系统监测点和可调参数较多的特点，提出并验证了3个实时优化控制方案：根据初级和二级冷谋水流量的比率，实时优化多台冷水机组的启／停控制；利用AHU自动控制水阀的阀位信息，实时优化二级水泵的控制；利用AHU自动控制水阀的阀位信息以及二级泵的工作状况，实时优化冷水机组出水温度的控制。

In order to achieve this purpose, the computer aided design technology is applied in the product cycle.

为了达到这个目的，计算机辅助设计技术被运用到产品开发周期中。

Executive body through control air blower or relay of dehumidifier achieve the goal of controlling the temperature and humidity part.

执行机构部分通过控制风机或除湿机的继电器来达到控制温度和湿度的目的。

Well-designed air curtain system can make use of cool air effectively, reduce the infiltrated air and save the energy.

超市中开式陈列柜风幕的卷吸作用是陈列柜热负荷的主要来源，良好的风幕系统可以提高冷空气的利用率，减少热负荷，达到节约能源的目的。

The paper introduces as how to design the exterior double ventilating curtain wall with air flow theory to realize energy efficiency and it also presents the measures to make sure quality of the curtain wall.

文章介绍了如何应用空气流动原理来设计外循环通风双层幕墙，以达到节能的目的，并提出相关的措施来保证幕墙性能。

Pringle maneuver combined with hepatic veins occlusion for complicated hepatectomy is safe, and is effective to prevent dangerous bleeding and air embolism with less disturbance of systemic hemodynamics.

Pringle′s法联合肝静脉阻断技术在复杂肝切除术中既能达到减少术中出血的目的，又能防止术中肝静脉破裂导致空气栓塞，还避免了下腔静脉阻断所引起全身血流动力学紊乱，是一种更安全、有效的血流阻断技术。

With the help of rockets, we send the airship into the space.

我们主要是通过火箭的助推来将飞船送入太空的，前人已经用他们的智慧告诉我们：一定要用多级火箭才能达到这一目的，那么这到底是为什么呢？

Chapter 1 gives a brief introduction to basic contents and methods of system identification and solutions of certain prob— lems met during the process of identificationIn chapter 2, the identification is accomplished by transforming the linear differential equation of a dynamic system into an algebraic form via block pulse functions .

第二章介绍采用正交函数BPF将含有未知参数的系统线性微分方程转化为代数向量方程求解，获取表征系统特性的传递函数或微分方程参数而达到辨识目的。

Maintenance and repair In order to ensure the performance of the new all-weather breathing valve to full use purposes.

保养与维修为了确保新型全天候呼吸阀的性能达到完全使用的目的。

Whereas its mechanism of effect was diverse, but they all attach the aim which alleviative the salt damage, this illuminate that the direct mechanism of improving the salt tolerance through exogenous substance is not only.

盐胁迫下外源钙、磷、钾、硅和NO的这些效果是改善玉米幼苗离子吸收与分配、促进生长发育的综合结果，尽管其作用的途径和机理各不相同，但都达到了对盐害缓解的目的，这说明通过外源物质提高植物耐盐性的直接机理不是唯一的。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新