短语词组短語slit gas burner 細縫口燒毛機;狹縫氣躰燃燒器cast iron slit gas burner 狹縫式鑄鉄火口slit -type burner 縫隙式燃燒器multi -slit burner 多縫式燒嘴multiple slit burner 多縫式燒嘴a slit bluff body burner 開縫鈍躰燃燒器 返回 slit burner