Monday, September 12, 2022
Tuesday, September 13, 2022
问题:超声波探头的实际声场中,声束轴线上不存在声压为零的点。...
Friday, September 16, 2022
问题:渗透检测时,花键、销钉、铆钉等下面会积存渗透液残余物,这些残余物...
Monday, September 12, 2022
问题:下列哪种方式较适用于检查大尺寸轴类锻件位于中心区域的缺陷()A、纵波径向B、纵波轴向C、横波周向D、横波轴向...
Friday, November 4, 2022
问题:已知192Irγ源的半衰期为74天,求一年(365天)后,该源射...
Tuesday, September 13, 2022
Friday, September 16, 2022
问题:磁粉检测是一种无损检测方法,这种方法可以用于检测:()...
Friday, September 16, 2022
Friday, September 16, 2022
问题:根据在工件中形成磁场的方向,一般可以分为()磁化、()磁向和()...
Friday, September 16, 2022
Friday, September 16, 2022
Monday, September 12, 2022
问题:焊接时由于熔化的焊材与母材基体的坡口面没有完全熔合为一体的现象叫...
Friday, September 16, 2022
Friday, September 16, 2022
问题:在同一材料中,如果提高某波形的超声波频率,则一定直径晶片的近场长...
Friday, September 16, 2022
Monday, September 12, 2022
Monday, September 12, 2022
问题:1安/米的磁场强度相当于1根通以1安培电流的直长导线在相距()米...
Monday, September 12, 2022
问题:一般来说试件中的磁感应强度在达到B-H曲线饱和点后,漏磁场急剧增...
Monday, September 12, 2022
问题:横波探头在检测过程中,斜楔将会磨损。下列说法错误的是()。...
Friday, September 16, 2022