• Great improvement has been brought about in the service life of springs by hot peening.

    锤头连续敲打金属表面的方法大大地延长了弹簧使用寿命

    youdao

  • Family member Thanduxolo Mandela: "to him, life was all about service to others."

    家庭成员·曼德拉:“对于来说,生活就是他人服务。”

    youdao

  • Family member Thanduxolo Mandela: "to him, life was all about service to others."

    家庭成员·曼德拉:“对于来说,生活就是他人服务。”

    youdao

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