使用符号运算方法设计了系统闭环控制律和大攻角下的过失速控制律。
The control laws of the inner closed loop system and post stall maneuver are obtained through using symbol operations design.
同时对变结构控制律中包含的符号函数项，采取了用饱和函数来代替的方法以尽可能地抑制变结构系统所带来的抖振。
The symbolic function in the variable structure control is replaced by the saturation function to reduce the chattering which is brought by the variable structure control system.
虽然，这个时代号称是工农阶级的时代，工农阶级却只能作为扁平化的符号存在，在美术作品中，男人无一例外的粗壮憨实、孔武有力，女人千篇一律的淳朴壮硕。
Although this era was called the age of the worker-peasant class, they were but a flat symbol existing in the art works, stout men and sturdy women, without exception.
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