grain upsetting arm的意思|示意
美 / /
英 / /
榖类倾侧力臂
grain upsetting arm的网络常见释义
榖类倾侧力臂 ... 榖类体积横倾力矩 grain transverse volumetric upsetting moment 榖类倾侧力臂 grain upsetting arm 榖密 grain-tight ...