The old man bent down and scanned the boy's reposeful face and listened to his placid breathing.

老人弯下身子，审视着孩子平静的脸，听着他平静的呼吸。

youdao

Therefore, it is of great importance to study the coupled dynamic characteristics of a mill main drive system for keeping efficient and reposeful production.

因此，研究轧机主传动系统的动力学耦合特性，对于抑制轧机振动、保证高效平稳地生产具有重要的理论意义和实用价值。

youdao

Therefore, it is of great importance to study the coupled dynamic characteristics of a mill main drive system for keeping efficient and reposeful production.

因此，研究轧机主传动系统的动力学耦合特性，对于抑制轧机振动、保证高效平稳地生产具有重要的理论意义和实用价值。

youdao