荧光增感屏和铅箔增感屏相比,荧光增感屏的主要优点是()...
Thursday, September 22, 2022
轴类锻件,一般来说用纵波直探头作轴向探测,检测效果最佳。...
Thursday, September 22, 2022
超声波从一种介质进入另一种介质而改变传播方向的现象叫做()...
Thursday, September 22, 2022
Sunday, September 18, 2022
Thursday, September 22, 2022
Thursday, September 22, 2022
Friday, September 16, 2022
金属凝固过程中,由于内部释放的气体没有逸出而形成的孔洞叫做()。...
Thursday, September 22, 2022
Thursday, September 22, 2022
Wednesday, September 21, 2022
Thursday, September 15, 2022
Wednesday, September 21, 2022
当超声纵波由有机玻璃以入射角15º射向钢界面时,可能存在()...
Friday, September 16, 2022
X射线管中电子的动能在靶上大部分转换成X射线能,少部分转换成热能...
Saturday, September 17, 2022
Thursday, September 15, 2022
Thursday, September 22, 2022
超声检测前,探伤仪校准的主要内容是仪器的扫描速度和检测系统的水平线性校准。...
Thursday, September 22, 2022
Thursday, September 22, 2022
一适当的换能器用变动频率的超声振动输入被测材料来测量材料厚度的检测称为()...
Sunday, September 18, 2022
Sunday, September 18, 2022