系统

This design is the engineering of the instrumentation system to the reactor in PX Plant in which there are 4 single loop control, 2 cascade control and all the controllers and control valves are selected and calculated carefully to the system, the CENTUM control system will be used .

本设计对PX装置异构化单元反应器进行自动控制系统设计，其中共设计单回路系统4个，串级控制系统2个，并对控制系统所涉及到的控制器，控制阀等进行了选择且进行了相关的计算。

This design is the engineering of the instrumentation system to thereactor in PX Plant in which there are 4 single loop control, 2cascade control and all the controllers and control valves areselected and calculated carefully to the system, the CENTUM controlsystem will be used .

本设计对PX装置异构化单元反应器进行自动控制系统设计，其中共设计单回路系统4个，串级控制系统2个，并对控制系统所涉及到的控制器，控制阀等进行了选择且进行了相关的计算。

In order to prove the global asymptotical stability of the endemic equilibrium, we introduce the change of variable which can reduce our original four-dimensional system to a three-dimensional asymptotical autonomous system with limit system.

利用复合矩阵理论以及竞争系统的Poincaré性质排除了渐近自治三维系统的极限系统周期解的存在性，进而利用极限方程理论得到了原四维系统地方病平衡点的全局稳定性。

In this part, all the components of the EGCS and their function and the characteristic of elevator group are explained in detail.

文中首先阐述了如何在原有梯群上引入电梯群控系统以及电梯群控系统的总体设计，对电梯群控系统的特性进行了系统的分析。

With this method, the damping characteristic and the steady state stability of power systems can be considerably improved.

该方法紧密地结合了电力系统实际，考虑了电力系统对励磁控制的基本要求，能够同时有效地改善电力系统的阻尼特性和提高电力系统的静态稳定性。

Stand on a base of upper study, this paper choose distribution map of agriculture and stock raising in seven different historical age as basic material, sum up ten agro-geology environmental factors into Loess plateau Area's AEG system, and cover all these factor's component parts map on distribution draft of every period's agricultural and pastrol, then measure the occupying proportion, bring results into fomula of factor information entropy, finally, take average value of ten factor's information entropy in each period as its characteristical AEG system entropy value.

在以上研究的基础上，论文选择黄土高原地区七个历史时期的农牧业分布图作为基本资料，将该区的十个地质环境要素纳入农业环境地质系统中，将其类别分布图与上述农牧业分布图进行叠加量测，结果代入要素系统熵计算公式，求得了十个农业地质环境要素在各个历史时期中的系统熵，对每个历史时期的这十个熵值求算术平均值就获得了该历史时期黄土高原地区总的农业环境地质系统熵。

The random system is reduced to its equivalent deterministic one by Chebyshev polynomial approximation, and the response of the stochastic system can be obtained by the deterministic methods.

首先用Chebyshev多项式逼近法将随机系统化成与其等价的确定性系统，然后通过等价确定性系统来探索随机Duffing-Van der pol系统的对称破裂分岔现象。

As medical students move into their clerkship experiences, they are expected to reordertheir disease-focused learning and apply it to patients presenting with undiagnosedproblems--problems that often relate to several organ systems and the interaction of differentillnesses.

全书内容覆盖了实践中所接触的全部人体器官系统：正常人体、头颈耳鼻喉、心血管系统、呼吸系统、泌尿系统、消化系统、神经系统、内分泌和代谢系统以及风湿性疾病和皮肤病。

Closed system architecture. Neither the traditional system architecture, nor the noticeable backbone architecture can supply system with enough flexibility. Also they can not create a neutral platform to integrate other systems conveniently.

系统结构方面：无论是传统的独立运作系统，目前广泛使用的套件配置模式，还是倍受注目的主干结构，都不能为系统提供一个全面开放的系统结构或完全中立的集成框架。

With business center, merchandise and other services to infrastructure projects; also supporting advanced central air-conditioning system, fire safety systems, communications services systems, closed circuit television system, can provide you with safe, fast key, thoughtful and meticulous service.

设有商务中心、商品购物等服务设施项目；还配套有先进的中央空调系统、消防安全系统、通讯服务系统、闭路电视系统等，可为您提供安全、快键、周到、细致的服务。

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％。