cardinal principle

• 基本原理

cardinal principle的用法和样例：

例句

1. The principle of FH communication is described.
   简述了跳频通信的基本原理。
2. Then she scanned a row of her students and called on one to repeat the cardinal points.
   尔后，她审视了一行学生名单，叫其中一位来重复那些基本原理。