Then, the most statement is about component of terminal receiver system, named data receiving Card, these introductions describes its design principle and implementation.
然后，重点阐述了作为终端接收系统的重要组成数据接收卡的设计理论和设计实现。
2
Place ti at the terminal of a declarative sentence, to express that something that the speaker is not sure, but the statement content is his subjective idea.