translation.en: And we applied this technique to many of the other systems on the satellite as well, and day by day, our design evolved from CAD to prototypes to production units.
translation.zh: 我们还把这个技术 运用到卫星的很多其它系统上 一天天过去，我们的设计已经从 CAD变成了样机 从样机变成了实际产品