For example, when the inner wall of the RPV outlet pipe is detected with a straight probe, the difference between the reference sensitivity adjusted by the concave interview block and the flat test block is close to 15dB.
For example, when the RPV exit takes over the inner wall with a straight probe detection, the concave interview block and flat interview block adjustment of the baseline sensitivity difference of nearly 15dB.
For example, when a straight probe is used to detect the inner wall of the RPV outlet nozzle, the reference sensitivity difference between the concave test block and the plane test block is close to 15 dB.<BR>