poles of metal for electric lines
电线金属杆 wire metal pole
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金属电线杆 Telegraph posts of metal
电线用金属杆 metal rod for wire
电线用非金属杆 non-metallic rods for electric wires
非金属电线杆 non-metallic utility poles
电源线路用非金属杆 non-metallic rods for power lines
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