Pascal 發(fā)表于 2013-3-31 15:13 ) a( P0 q! b& h b" Y! E/ V LZ 對(duì)軸承鉆研得很細(xì)呀。* [% ]0 Y5 t5 K8 o% e6 q - G& f; R8 Z' E知道一些: