Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:汽车覆盖件板料清洗的主要作用是()。A、清除板料表面粘附的砂泥B、使板料具有防锈作用C、减小模具的磨损...
Monday, November 7, 2022
问题:模具必须保证操作方便,安装和维修方便与否可不考虑。()...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:弯曲就是使工件获得各种不同形状的弯角。弯曲模上使工件弯曲的工作部...
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
问题:翻孔时,主要的变形是坯料()。A、切向的伸长和厚度方向的收缩B、切向的收缩和厚度方向的收缩C、切向的伸长和厚度方向的伸长D、切向的收缩和厚度方向的伸长...
Tuesday, October 3, 2023
Wednesday, May 24, 2023
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Tuesday, September 13, 2022
Friday, December 15, 2023
问题:毛刺是冲切时,在工件的正常切断面边缘上出现的金属多余部分,目视或手感发现不了。()...
Sunday, December 24, 2023
问题:金属材料对弯曲成型的适应性一般用拉伸实验来鉴定。()...
Wednesday, May 24, 2023
Tuesday, September 13, 2022
问题:产品质量标准包括()、()和()、标志和包装等内容。...
Tuesday, September 13, 2022
问题:在其它条件不变的情况下弯曲半径越大,弯曲力就越大,弯曲半径越小,...
Tuesday, September 13, 2022