thermal intensity of burner port
thermal strength of burner port
home port [= port of registry]
Fuel oil burner Spray burner
port -to- port isolation
port-to-port encryption
security from port to port
ZV Port Zoomed Video Port
4-channel TC type coal burner
acetylene burner
乙炔灯
乙炔燃烧器
乙快焊炬
乙炔喷灯
电石灯
乙炔燃烧器乙快焊炬
乙炔焊枪
adjustable concentrated-thin burner