carbonizing flame 还原焰; 碳化火焰; 碳化焰..
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weak carbonizing flame 微碳化焰
The reasons are given why weak carbonizing flame of oxyacetylece is used for heating and why brazing seam area can't be polished.
论证了加热时氧——乙炔焰用微碳化焰的原因及焊缝结合区不能采用抛光的道理。
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