问题:浇铸前()充分,浇铸时液面平静没有沸腾的钢叫镇静钢。...
Saturday, September 9, 2023
Friday, September 16, 2022
Saturday, September 17, 2022
问题:轧钢后的冷却方式可分为自然冷却、强制冷却和()。...
Sunday, September 11, 2022
Sunday, February 26, 2023
问题:轧机上常用的轧辊轴承有滑动轴承、()和液膜轴承。...
Friday, August 25, 2023
Wednesday, October 18, 2023
Monday, September 12, 2022
Monday, September 12, 2022
问题:在阳极-机械切割中,一般按被切割金属的()确定工作电流。...
Sunday, September 11, 2022
Friday, September 16, 2022
Monday, September 12, 2022
Sunday, September 11, 2022
问题:氧化铁皮厚而致密,酸洗前破鳞不充分,酸洗液的浓度低或温度低,酸洗...
Friday, September 16, 2022
Friday, September 16, 2022
Saturday, September 17, 2022
问题:电压的单位是伏特,电流的单位是安培,电阻的单位是()。...
Friday, September 16, 2022
问题:一轧件轧前的长度是2000mm,轧后轧件长度是5000mm,轧件...
Monday, September 12, 2022
问题:()是指钢板表面呈“舌状”或“鱼鳞片状”的翘起薄片。...
Monday, September 12, 2022
问题:钢材中圆钢、方钢、扁钢、等边角钢等属于()断面型钢。...
Friday, September 16, 2022