This paper discussed the design criteria of material selection, the area of single unit, flow path, flow rate of a plate heat exchanger (PHE)in a geothermal heating system.

重点分析了板式换热器在地热供暖系统中材料、单片面积、流程、流道、流体流速等选取的原则；在综合考虑技术、经济、环境效益及节能的基础上，论述了对板式换热器优化设计的方法。

youdao

The theory and methods of CAD for three-unit fixed partial dental prosthesis crown bridge are studied, which is based on the design technology of single dental prosthesis crown bridge design.

本文在基于特征的义齿单冠设计技术基础上，针对三单元固定冠桥的计算机辅助设计理论与方法进行了探索，形成了一套完整的冠桥设计路线。

youdao

The design of the single crystal furnace temperature control system is realized by analog electronic, microcomputer unit control skills.

文中应用模拟电路、微机控制技术实现了对控温精度要求很高的直拉单晶硅炉温度控制系统的设计。

youdao

And unlike dual-drive designs, WD's hybrid technology provides single-unit design homogeneity that OEM system manufacturers have long sought from the storage industry.

ENGADGET: Western Digital builds 5mm-thick hybrid hard drive, Ultrabook makers sign on early