一级水

城市供水、供电设施完善，自来水供应充足，饮用水源达到国家一级水标准，城区内综合日供水能力4.5万吨。

The establishment of water and power supply system , water supply is enough , the source of drinking-water reaches the standard Class One , the capacity of water supply is45,000 tons per day .

分析了一级泵水系统采用温差控制法实现变流量运行对空调系统运行的影响。

Analyses the effects of variable flow operation of primary pump water systems based on the temperature difference control method on the operation of air conditioning systems .

结合三盛公黄河特大桥一级阶地富水砂粘土、粘砂土、粉细砂地层中采用井群降水明挖承台施工的方法，介绍了井群降水设计与施工技术。

The design and construction technology were introduced of group wells precipitation .

一种双级水环式真空泵

Double-stage water ring vacuum pump

一级除盐化学水处理系统存在的问题及技术改造

Problems in the First-Level Desalting Chemical Water Handling System and Technical Transformation

空调一级泵变流量水系统的管网优化

PULSE PUMP Optimization of the Hydraulic Pipe-network for Primary-only Variable Chilled Water Flow System in Air-conditioning

区内近S&N向的主要大断裂和两组次一级的断裂是水热活动的主要通道和主要控热构造裂隙。

The major big rift and two groups of the minor rifts approximately pointing to S-N in the area are the main pathway and the main tectonic crack of heat controller for the hydrothermal activity .

本论文就是以空调水网能耗最低为目标，在负荷动态变化下，对空调一级泵变流量水系统负荷侧的管网进行优化分析。

Aiming at the least energy consume of HVAC water-system , considering changing air-conditioning load , this thesis had achieved a hydraulic analysis and dynamic optimization of the pipe-net at the load side for primary-only pump variable flow system .

进水管与压水机进水阀连接，进气阀有一接口连接下一级压水机的进气阀。

The inlet pipe is connected with the intake valve of the pressurized water machine , one interface of the intake valve is connected to the intake valve of the lower level pressurized water machine .