【机械工程；照明；加热；武器；】产生一种反作用的推力

producing SLIDE fasteners from plastics or substances in a plastic state

oil-producing country【油气】 工经

device in the bowl producing upwardly-directed sprays

producing strain

pigment-producing rays

nozzle for producing different kinds of discharge

bimetallic strip for producing fine movements

devices for producing compact unified coal charges outside the coke oven