1) the first class net
一级网
1.
Regulating the first class net water power with self-operated flow regulator;
利用自力式流量调节器调节一级网水力工况
2) first-level pipeline network
一级管网
1.
This paper briefly states the operational principle of 200H forerunner pressure reducing valve,introduces the connection mode,type selection calculation and economy comparison when using it to use backwater of first-level pipeline network to supply water and stable pressure of second-level pipeline network.
本文简要介绍200H先导式减压阀的工作原理,重点介绍用其作为由一级管网回水向二级管网补水定压主要阀件时与热网的连接方式、选型计算及与用补给水泵向二级管网补水定压方式的经济比较等问题。
3) first-degree heating network
一级热网
4) 1st loop of hot water network
热水一级网
1.
Explosion on operation calculation of the 1st loop of hot water network in "tri-cycle" district heating system;
“三环制”供热系统中热水一级网运行计算研究
5) one-layer-mesh indexing
一级网格检索
6) level 1 real fracture network
一级真实裂隙网络
补充资料：城域网(见计算机网络)
城域网(见计算机网络)
metropolitan area network, MAN
ehengyuwQng城域网(metropolitan area netwo次，MAN)分布范围可覆盖几个街区到整个城市的计算机网络。见计算机网络。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条