钎焊铜及铜合金 、 银、钼等金属.Brazing of copper, copper alloys, silver and molybdenum etc.黄铜和青铜是两种广泛使用的铜合金.Two widely used alloys of copper are brass and bronze.研究了ICP -AES 法测定铜合金中微量硅的最优化条件.The conditions for determination of Si in C...
Their argument put a bit of a damper on the party.他们的争论使聚会颇为扫兴.The cold weather put a damper on our plans...寒冷的天气给我们的计划泼了冷水。Remove vibration damper bolt and washer from end of crankshaft.从曲轴端拆下减震器螺栓和垫圈.That would put a d...