... differential omega 差奥米加 alpha and omega 始终(主要部分)... omega steel欧米加高硅钢...
2
?奥米伽高硅钢
奥米伽高硅钢
权威例句
1.
It has a 42mm wide steel case and bracelet, being powered with the same Omega caliber 1861 manually wound chronograph movement that was in the watches that went on the moon.