automatic variable pitch control
the variable pitch control
Variable Pitch Control System
variable pitch propeller control
Adaptive variable control
adaptive variable-pitch
analog variable control
analog variable control system
Analysis of control variable being limited
asymmetric variable pitch helical spring
conical spiral conveyer with pitch variable
continuously variable control
control variable
控制变量
控制变异法
控制量
控件变量
决策变量
控制变数
操纵变量
control variable inequality constraint
control variable method
deviate control variable