The main characteristic of equipment is:(1) Vapor and liquid circulate concurrent and contact count-current.
本装置主要特点有：（1）汽液两相流体同时循环，逆流接触。
According to the characteristic of equipment and fault diagnosis, both database and knowledge base are discussed emphatically.
根据变电设备自身特性与故障诊断特点，重点讨论了专家系统的数据库和知识库设计。
The article briefly describes the characteristic of equipment, technology and principle of hot metal desulphurization with granulated magnesium.
阐述了单吹颗粒镁脱硫的工艺设备特点、基本原理及应用效果。
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