定值: constant value; definite val ...控制: control; dominate; regulate; ...固定值控制: fixed value control恒定值控制: constant value control设定值控制: fixed set point control; set point control定值控制系统: fixed set point control system; rixed-based natural frequency恒设定值控制: constant setpoint control定值控制电子秤: electronic batching weigher固定给定值控制: fixed setpoint control数字给定值控制: digital set point controlph值控制: ph control比值控制: ratio control比值控制器: ratio controller,边值控制: boundary value control变值控制: variable valve control; variable-value control常数值控制: constant value control峰值控制: peak control幅值控制: amplitude control极值控制: extremum control; pick holding control价值控制: value control均值控制图: mean chart数值控制: control, numerical; nc; numerical control数值控制带: tape numerical-control现时值控制: present value control现值控制: present value control