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分析了敞车中侧门门锁装置的故障原因，介绍了改进措施。
The causes to troubles in side door locks on Gondola cars are analyzed. The measures for improvement are described.
youdao
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分析了敞车中侧门门锁装置的故障原因，介绍了改进措施。
The causes to troubles in side door locks on Gondola cars are analyzed. The measures for improvement are described.
youdao