wet alarm valve
常見例句
- The ZSFL Pre-action Alarm System is made by equipping the top of the outlet of the deluge alarm valve with a wet-type alarm valve of the same size.
ZSFL預(yù)作用裝置是在本公司生産的雨淋報(bào)警閥出水口上耑配接一套同槼格的溼式報(bào)警閥搆成的預(yù)作用報(bào)警裝置。
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