问题:气焊和电弧焊相比,它的优点是(),最适用于流动作业和没有电力供应...
Friday, September 16, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
Sunday, September 11, 2022
问题:电气焊接过程中产生的臭氧主要对人体的呼吸道及肺部有强烈刺激作用。...
Sunday, September 11, 2022
Friday, September 16, 2022
问题:某厂制药车间将一个渗漏的酒精空桶送到机修组焊补,焊工甲施焊不久,...
Sunday, September 11, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
Friday, September 16, 2022
Sunday, September 11, 2022
Friday, September 16, 2022
问题:铜及铜合金焊条的焊芯,采用氩弧焊用的标准焊丝,成分与被焊材料相对...
Sunday, September 11, 2022
Thursday, December 22, 2022
问题:交流弧焊变压器焊接电流的细调节,是通过弧焊变压器侧面的旋转手柄来...
Tuesday, September 13, 2022
问题:对于塑性较低的高强度钢,焊接接头的角变形和错边对脆性断裂有较大的...
Tuesday, September 13, 2022
Friday, September 16, 2022
Friday, September 16, 2022
问题:焊缝致密性检验经常采用水压试验、气压试验、()、()。...
Friday, September 16, 2022