代数符号 meaning in English

algebraic signs
sign digit

Algebraic sign control circuit
代数符号控制电路
Algebraic sign conventions
代数符号规则
The development of the method of exhaustion beyond the point to which archimedes carried it had to wait nearly eighteen centuries until the use of algebraic symbols and techniques became a standard part of mathematics
几乎18个世纪以后，直到代数符号及其算法成为数学标准算法的一部分时，穷竭法的发展才超出阿基米德应用范围。
In the aspect of theoretical research : firstly , general descriptive format of controlling rule is discussed based on trait of intelligent control ; secondly , principle and tactic of basic logical controller are discussed based on panboolea algebra , and then control rules of basic logical controller are symbolized by using panboolea algebra ; at last , control idea of nine - points controller is presented based on basic logic controller , and control tactic is also analyzed based on phase - plane method
在理论研究方面：首先从智能控制的自身特点讨论了其控制规律的一般描述形式；然后以泛布尔代数为理论基础，讨论了基本型逻辑控制器的控制原理与策略，将逻辑控制器的控制规则用泛布尔代数符号化；最后以基本逻辑型控制器为基础，讨论了九点控制器的控制思想，并从相平面的角度对控制器的控制策略进行了分析。