1.  minor loop
2.  subloop

• 1. 副回路: minor loop | subloop
• 2. 副载波跟踪回路: sub-carrier tracking loop

• 1.结合常规PID控制方法，构建了主、副回路的自整定PID模糊控制器并对其有效性和稳定性进行了数字仿真。
  Combining regular PID control methods, the main-auxiliary feedback self-organizing fuzzy PID controller was designed and the simulation verifies its advantage and stability.
  dict.yoduao.com
• 2.而杨特派员却一副心有成竹的样子，说事情很快就会峰回路转。
  But a pair of cable and Yang heart has the appearance of bamboo, said that soon turns around.
  dict.yoduao.com

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