ddz

Design of Detector on DDZ Thermal Meter Based on Single Chip Microcomputer

基于单片机控制的DDZ型热工仪表检测仪的设计

Sensitive area for model DDZ - ⅲ electric-pneumatic valve locator and the study of its moving speed

DDZ-Ⅲ型电&气阀门定位器灵敏阈和动作速度研究

To administer the import & export , the economic and technological cooperation with the outside and other foreign-related economic activities in the DDZ .

管理开发区的进出口贸易、对外经济技术合作和其他涉外经济活动；

To draft the overall plan and the plan of the economic and social development of the DDZ and organize the implementation after the procedure of examination and approval .

编制开发区的总体规划和经济、社会发展计划，按审批程序批准后组织实施；

To coordinate and supervise the work of the branches or agencies assigned to the DDZ by relevant departments of the People 's Government of Ningbo .

协调和监督有关部门设在开发区内的分支机构和派出机构的工作；

The enterprises in the DDZ shall exercise the social insurance system in accordance with the provisions of the State , the Province of Zhejiang and the City of Ningbo .

开发区内的企业应当依照国家和省、市有关规定实行社会保险制度。

The real time control system of temperature and humidity of nicotian leaf ferment design by self is autocontrol system , which is composed of DDZ ⅱ instrument and one industrial control microcomputer .

自行设计的烟叶发酵温湿度实时控制，是采用DDZ&Ⅱ系列仪表与单台工控机组成的自动控制系统。

A new alternative voltage converter is designed to measure and transmit alternative voltage , to meet the requirement of the analogous input signals for DDZ - ⅱ, DDZ - ⅲ instrument , and so forth .

为了实现交流电压的测量与变送，满足DDZ-Ⅱ、DDZ-Ⅲ仪表、电子计算机等对该模拟量输入信号的需求，设计了一种新型交流电压变送器。

It was impossible to put the equipment under automatic control ( 45 % ~ 50 % ratio in put-in ) because the coupling between air temperature and air pressure was very hard to be regulated by existed DDZ II instruments .

由于原用DDZ-II调节仪表难以调节风温和风压的耦合，致使设备无法完全投入自动运行（投入率为45%-50%）。

This is a microcomputer-controlled system . It is a DDC close-cycle system composed of eight-way measuring devices , A / D and D / A converters as well as a DDZ - ⅱ executive body .

本系统是以单板机为核心的实时控制系统，由八路检测、A/D转换、D/A转换、DDZ-Ⅱ执行机构组成一个DDC闭环系统。

The two new method for control throw of water level in love-pressure heater of steam turbine with DDZ - ⅱ continuous regulating meter in power plant are introduced in this paper . It shows that the theoretical analyses are correct and the practical applications are feasible .

通过介绍用DDZ&Ⅱ型自动调节仪表对电厂汽机低压加热器水位进行控制投入的两种新方法，从而说明了理论分析的正确性和实际应用的可行性。

With the energy analysis and material flow analysis in DDZ as the research contents , the results of analyzing all indicators show that the environmental burthen in DDZ is relative high , Eco-efficiency relative low , the ability of sustainable development relative weak , and the ecological level elementary .

以DDZ的能值分析和物质流分析为依据，通过各项指标的分析表明，DDZ环境负荷较高，生态效率较低，可持续发展能力相对较弱，园区生态化建设处于初级生态化水平。