所谓磁化,就是把铁磁性物质放在磁场中,经磁场强度的(),物质就表现出磁性来....
Thursday, September 22, 2022
Thursday, September 15, 2022
铁磁性材料的磁化曲线,X轴表示磁场强度H,Y轴表示()。铁磁性材料作连续法磁粉探伤时,磁化电流的计算可依据与该零件相同材...
Sunday, September 18, 2022
Monday, September 19, 2022
Thursday, September 22, 2022
灵敏度余量是探头和仪器的综合性能,是指整个探伤系统发现()的能力。...
Thursday, September 22, 2022
Wednesday, September 21, 2022
Thursday, September 22, 2022
JB/T4730.4-2005标准对磁痕显示的分类是按磁痕的产生原因、形状和方向进行的,没有涉及缺陷的定性。...
Tuesday, September 20, 2022
Thursday, September 15, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Saturday, September 17, 2022
Wednesday, September 21, 2022
单选题将零件从线圈中抽出时,哪种电流对零件的退磁效应最小?()A 交流电;B 直流电;C 半波整流交流电;D 全波整流电...
Saturday, May 11, 2024
Tuesday, September 20, 2022
Thursday, September 22, 2022
单选题下列哪种功能是显像剂承担的?()A 将不连续性中的渗透液吸出B 遮住不相关的显示C 干燥零件表面D 提供一个无反差背...
Monday, May 8, 2023
使用干粉法检测时,应使磁粉均匀地洒在试件表面上,然而再通入适当的磁化电流。...
Thursday, September 22, 2022
Thursday, September 22, 2022