短语词组短语blowpipe flame and zone 汽油吹管焰与层flame blowpipe 火焰焊炬single flame blowpipe 单焰焊炬flame cleaning blowpipe 火焰表面清理烧矩flame hardening blowpipe 火焰表面淬火烧炬multi -flame blowpipe for oxy-acetylene 多焰氧炔吹管 返回 blowpipe flame