A method for determination of in-hole dynamic force-penetration data from two-point strain mesurement on a percussive drill rod Analysis of elastic wave in non-uniform rods from two-point strain measurement

 
  • 沖擊機械系統動(dòng)力學(xué)沖擊應力波設計模型雙截面應變測試法及其在接桿鑿巖中的應用
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