backflow preventer
A device used to prevent water (or other liquids) from being siphoned into a potable water system.
backflow preventer for a hose connection
热门单词
- bit key
- bit stock
- bit stop
- bit stop
- bitumen
- bitumen macadam
- bituminized fiber pipe
- bituminous cement
- bituminous coating
- bituminous concrete
- bituminous distributor
- bituminous emulsion
- bituminous felt
- bituminous grout
- bituminous hot-mix
- bituminous paint
- bituminous varnish
- bituminous waterproofing
- bivalate
- bivalate, bivallate
- bivallate
