- ratio controller
- 比例: scale; scaling
- 比例控制: control, proportional; proportional (p) control; proportional control; proportioning control; rate control; ratio control; scale control; scaling control - one guide
- 比例控制阀: proportional control valve
- 比例控制法: proportional controlling means
- 比例控制器: proportional controller; controller; proportional regulator; ratio controller
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