However, the structure adjustment and system optimization should be based on the integral understanding of the agricultural production system, and its regularity of systematic structural evolution.
农业结构的调整，必须建立在对系统整体认识的基础上，必须符合系统结构本身的演变规律。
And the use of orthogonal test conducted on the hydro-turbine governing system parameters PID conditioning system optimization, have been better adjustment parameters.
并采用正交试验法对水轮机调节系统进行PID调节系统参数的优化，得到了效果较好的调节参数。
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