- a valve that opens automatically to relieve excessive pressure.；a means of giving harmless vent to feelings of tension or stress
noun: safety valve, plural noun: safety valves
- 1. a valve that opens automatically to relieve excessive pressure.
- ▪ a means of giving harmless vent to feelings of tension or stress laughter may be a safety valve that reduces tension
...全國溫室氣體（主要為二氧化碳）排放量，允許企業以排放量額度進行交易。 4. safety valve pric - within a cap-and-trade system, a price set by government at which polluters...
...水之排放閥，其沖放動作稱Blow down, blow off. 另其上所裝置之安全閥(Safety Relief Valve)用於超壓蒸汽之吹洩亦作Blowdown. 故而 Steam blowing...
... cold works, marine ice machine air conditioning pump and valve repair