It dealed with the problem of brazing of steel hardware and copper that nitrogenbase controlled atmosphere continuous brazing furnace.
研制的氮基可控气氛连续钎焊炉，成功地解决了钢质零件的铜钎焊问题。
2
The experimental results show that alumina dispersion strengthened copper base composites with good heat-resistance can be produced by the means of the inner oxiding in a nitrogenbase atmosphere.
结果表明，在氮基气氛中进行内氧化处理同样可以得到具有很好热稳定性的氧化铝弥散强化铜基复合材料；
3
Such intercropping is also a natural way of fertilizing: the legumes growing at the base of the taller sorghum add nitrogen to the soil.