SECAM colour system

例句：

1. 1. The SECAM colour system iswidely used in Europe.
   欧洲广泛使用SECAM彩色系统。
2. 2. The SECAM coloursystem was introduced in the 1970s.
   SECAM彩色系统在20世纪70年代引入。
3. 3. TheSECAM colour system is a popularchoice for television broadcasting.
   SECAM彩色系统是电视广播的热门选择。