摘要
文章简述了供热工程中常用阀门的原理。
This paper briefly introduces the principles, features and application of the service valves ia heat supply engineering
出处
《山西科技》
2004年第6期91-92,共2页
Shanxi Science and Technology
关键词
供热工程
阀门
文章
特点
简述
airtight part
directional character
three-eccentricity
erection
