| 单词 |
preaction sprinkler system |
| 释义 |
preaction sprinkler system preaction sprinkler systemA dry-pipe sprinkler system which is activated by a smoke- or heat-sensing device, thereby opening a control valve and admitting water.
preaction sprinkler system  preaching cross at Inverary, Argyllshire, Scotland A fire sprinkler system using automatic sprinklers (heads) attached to a piping system; is controlled by a supplemental fire detection system, that is installed in the same area as the sprinklers; actuation of the detection system opens a valve which permits |
| 随便看 |
- aprigf
- april
- april 01
- april 02
- april 03
- april 04
- april 05
- april 06
- april 07
- april 08
- april 09
- april 1
- april1
- april 10
- april 10, 2007
- april 10, 2011
- april 10, 2012
- april 10, 2013
- april 10, 2014
- april 10, 2015
- april 10, 2016
- april 10, 2017
- april 10, 2018
- april 10, 2019
- april 10, 2020
|