BoltMikeⅢ型超声波螺栓应力检测仪在盘香式启闭机上的应用
BoltMikeⅢ형초성파라전응력검측의재반향식계폐궤상적응용
Application of the BoltMike Ⅲ ultrasonic stress measuring instrument in the multi steel wire rope pan type head stock gear
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