The classical fracture mechanic can only explain the static fracture problem of drill string, but it is incapble of explain drill string failure under dynamic load.是什么意思_The classical fracture mechanic can only explain the static fracture problem of drill string, but it is incapble of explain drill string failure under dynamic load.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句