preselector造句

• Other features include : preselector time control for auto cycling ; roll slide positive stop ; and automatic lubrication
  其他功能包括：自动旋转时间预选控制，辊子滑动前挡板，以及自动润滑。
• By means of using the electronically tuned preselector and multiple conversion technology , a wide band receiver with wide dynamic range is basically achieved . the scheme is innovative and original not only in the scheme itself but also in the technology of some sub - circuits
  课题采用电调选频和多次混频的方案基本实现了大动态宽频带接收，该方案无论是方案本身还是方案中所涉及到的技术都具有一定的创新与独到之处。