- 一级: one-level; Class A; senior g ...
- 控制点: control point; control stati ...
- 控制点: control point; control station; [航空; 航海] point of control; control post◇控制点调整 control point adjustment; 控制点同步器 control point synchronizer
- 串级控制: cascade control
- 次级控制: secondary control
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