The basic failure mode of borehole is borehole avalanche and shear zone caused by bore instability.
井眼基本破坏形式是由于不稳定性造成的井眼岩石崩落坍塌和剪切带。
Diagnosis of lumbar segmental instability may also be based on the patient's history plain radiographs and examination findings as they can address the neutral zone and the stabilizing system.
因为临床表现、腰椎正侧位片和体格检查可以反应脊柱的中性区城和稳定系统，所以能作为诊断腰椎节段性失稳的依据。
Diagnosis of lumbar segmental instability may also be based on the patient's history, plain radiographs and examination findings, as they can address the neutral zone and the stabilizing system.
因为临床表现、腰椎正侧位片和体格检查可以反应脊柱的中性区城和稳定系统，所以能作为诊断腰椎节段性失稳的依据。
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