程控数值控制
programmed numerical control
PNC
计算器数值控制
computer numerical control
CNC
模拟数值控制器
analog-digital controller
数值控制器件编程语言
NCPPL Numerical Control Parts Programming Language
可编程控制器控制
programmable logic controller control
比值控制
ratio control
ration control
Proportion control
resisting integral saturation
变比值控制
control of changing proportion
variable-ratio control
串级和比值控制
cascade and ratio control