user-design command的意思|示意

Understanding this design is critical because if you want to get anything done on the command line, you must be able to communicate back and forth to the user.

了解这一设计是至关重要的，因为如果需要在命令行中执行任何操作，都必须能够与用户来回通信。

Two design methods of fuzzy logic controller are introduced. One is graphics user interface whose control rules is certain, the other is command lines whose control rules uncertain.

介绍了两种模糊控制器的设计方法，一种是模糊控制规则固定的用户图形界面方法，另一种是模糊控制规则可调的命令行方法。

Imagine the design exercise is to create a small command-line calculator: a user types (or pipes) a mathematical expression in, and the calculator parses it and prints the result.

想像设计工作是创建一个小的命令列计算器：使用者类型(或管道)中，一个数学运算式和计算器进行分析和列印结果。