circumferential annular crack
表面环向裂纹
circumferential surface crack.
环向表面裂纹
WAVE PROPAGATION CHARACTERISTICS OF CYLINDRICAL SHELLS WITH CIRCUMFERENTIAL SURFACE CRACK
含环向表面裂纹圆柱壳的波传播特性研究
The vibrational power flow characteristics of pipe with circumferential surface crack and its crack identification
含环向表面裂纹管道功率流特性与裂纹识别
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