oxy-hydrogen torch
... oxy-hydrogen torch 氢氧吹管 oxy-hydrogen torch 氧氢吹管 oxy-hydrogen welding 氢氧焊接 ...
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氢氧吹管 oxy-hydrogen blowpipe ; oxy-hydrogen torch ; oxygen hydrogen torch ; blowpipe
氢氧气吹管 oxyhydrogen blowpipe
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