gas ring

美 
英 
  • n.煤气灶火圈
  • 网络气环;气密涨圈;活塞压缩环
复数:gas rings  
gas ring
n.
1.
煤气灶火圈a round piece of metal with holes in it on the top of a gas cooker/stove, where the gas is lit to produce the flame for cooking