特优级的英文

• aaa
• extra

• 级:    level; rank; grade
• 特优:    aaa; distinction
• 优级:    senior
• 特优版:    psp the best
• 特优的:    extra-

例句与用法

1. This product produce by good castiron , antiinternal stress , material is stability well , precision is stable , very suitable for high speed press machine continuous production
   机架采用特优级铸铁造，并经内应力消除，材质稳定，精度长期稳定无变化，最适合连续冲压生产。