控制

Regional development occupies large land, develops lots of contents, relates to multifields including industry, construction, business and civicism, so it is necessary to identify its influence on nature environment such as air, groundwater quality, surface water quality and hydrological condition, sound, soil, plants, topographty and social environment such as population, traffic, economic structure. The countermeasures of carring through circular economy, controlling pollution sources, planning industrial structure scientifically, distributing reasonably, implementing cleaner production and total quantity control should be taken to promote regional sustainable development.

区域开发具有较大的不确定性，并且占地面积大、开发的内容广、性质复杂、建设周期长，通常的区域开发都有可能涉及到工业、城建、商业、人居、市政等多个领域的开发活动，所以区域开发必须结合区域开发的特征，准确识别其可能对区域内及其周边的空气环境、地下水质量、地表水水质及水文条件、声环境、土壤、植被、地形地貌等自然环境和人口、交通、经济结构等社会环境等产生的影响，并采取发展循环经济，减少污染生成的源头控制措施；科学规划产业结构，合理布局的预防性措施；源内达标、区域集中控制的污染治理措施；实施清洁生产、总量控制，推进区域环境与经济的持续发展。

The temperature is the controlled variable and a closed loop system is constructed.

基于单片机控制的电阻炉温控制系统是一种智能型控制系统。

This is the closed loop of vector control system using speed sensor.

这是一个有速度传感器的闭环矢量控制系统，观测转子的磁通，提出了磁通观测器和电机解耦控制的结构，建立数学模型，并且用计算机仿真实验证实该控制系统动态特性良好，并对定转子电阻变化具有鲁棒性。

But distilling tower temperature control is a typic big time-lag system, and the control of it is always a difficult problem in coak producing industry.

但由于氨塔温度控制属于典型的大时滞系统，对这种系统的自动控制一直是焦化生产控制中的一个难题。

Based on the defect analysis of PLC control system in coal preparation plant, a new method for on-line defect judgment is put forward.

在对PLC网络控制的选煤厂控制故障分析的基础上，提出了在线判别控制系统故障的新方法。

In this paper,the relay-contact device of control system of the vacuum sputtering coater is designed and researched,the technical process,the request,and the controlled process of the control system is analyzed and researched comprehensively.

本文针对真空溅射镀膜机采用继电器-接触器的控制系统进行了设计与研究，对控制系统的工艺流程、要求、及控制过程进行了详细的分析和论述。

Based on the analysis of mechanical and driving control characteristics of the coater, the design of driving control scheme was put forward, the equipment selection and funtion realization were described, finally the control implementation was explained.

摘 要：在对涂布机传动控制工艺分析的基础上，确定了传动系统控制的设计方案，同时进行了设备选型，实现了对较高车速涂布机的电气控制。

Base on the SINUMERIL 8M NC gantry milling machine control system and electric cortrol tank of WALDRICH COBURG in Germany company,we propose an improve scheme with simens CNC to control AC servo move forward system.

针对德国WALDR ICH COBURG公司的SINUMER IL 8M数控龙门铣的控制系统及电气控制柜，提出了用西门子CNC控制交流伺服进给系统进行改造的方案。

Obvious effect of this method was obtained in the application and a new approach for the optimization control of coke oven was provided.

采用具有多工况火道温度智能优化控制结构的方法取得了良好的控制效果，为焦炉加热过程的优化控制问题的解决提供了一条新的途径。

Furthermore,we present the method for designing quadratic Bezier developable surface:give four corner points of developable surface and two free designing parameters,the other two control vertexes are on the line connecting the linear interpolation point between the first two control vertexes and the linear interpolation point between the last two control vertexes,and they are the linear interpolation points between these two linear interpolation points respectively,namely,these four linear interpolation points are colinear.

提出了二次Bézier可展曲面的设计方法：给定可展曲面的4个角点a0、b0、a2、b2和两个自由设计参数？姿、？滋，则待求的2个控制顶点a1、b1是在前2个控制顶点a0、b0的线性插值点a*与后2个控制顶点a2、b2的线性插值点b*的连线上，并且也是a*、b*这2个线性插值点的线性插值，即这4点a*、a1、b1、b*共线。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。