电动气动变换器
electropneumatic transducer
electropneumatic converter
电动-气动变换器
electric to pneumatic transducer
电动气动调节器
electropneumatic regulator
电动气动调温器
electric pneumatic temperature regulator
电动气动号志系统
electropneumatic signal system
电动气动接触器
electropneumatic contactor