surface crack detection的意思|示意

The wave propagation and power flow characteristics of a shell-type pipe with circumferential surface crack are investigated and the method for crack detection is proposed.

研究在外力激励下含有环向表面裂纹损伤的壳式管道的波传播与功率流特性，并给出裂纹识别方法。

In view of structure-borne sound, a diagnosis method for the detection and location of the peripheral surface crack of circular plates by means of vibrational power flow is investigated.

从结构噪声的观点，利用振动功率流方法对圆板在集中力作用下的周向表面裂纹进行了诊断研究。