【机械工程】两个或多个发动机的联合

penicillin streptomycin combination

logical combination

combination termination

combination oven

combination of different types of cyclones using free vortex flow

nozzle-baffle combination system (flapper-and-nozzle system)

combination of rotary-piston pumps with oscillating-piston pumps

combination gyroplane with power-rotor