The tests results show that the structure parameters of improved coupler and the draftgear may comply with the safety requirement.
试验结果表明：机车钩缓装置结构参数优化后满足大秦线列车运行的安全性要求。
The tests results show that the structure parameters of improved coupler and the draftgear may comply with the safety requirement.
试验结果表明：机车钩缓装置结构参数优化后满足大秦线列车运行的安全性要求。
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