Due to concealment installation, complicated structure, difficult to remove, complex fault and limit test conditions, the fault diagnosis of gear transmission is extremely difficult.
由于地铁齿轮传动装置安装隐蔽、结构复杂、难于拆卸，故障类型多而复杂，加之测试条件的限制，故障诊断难度相当大。
Due to concealment installation, complicated structure, difficult to remove, complex fault and limit test conditions, the fault diagnosis of gear transmission is extremely difficult.
由于地铁齿轮传动装置安装隐蔽、结构复杂、难于拆卸，故障类型多而复杂，加之测试条件的限制，故障诊断难度相当大。
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