• Abnormal sound of chafing was heard from the crane during running test.

    起重机在运转试验中,发现有不正常的磨擦声响。

    youdao

  • Abnormal sound of chafing was heard from the crane during running test.

    起重机在运转试验中,发现有不正常的磨擦声响。

    youdao

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进来说说原因吧 确定