【机械工程】不透水，保护性外罩

drip-proof screen-protected machine

drip-proof motor

squirrel-cage drip-proof induction motor

drip-proof type motor

antidrip【科技】;drip-proof【科技】

drip-proof, multi-pole, coupling

drip-proof appliance【电】

drip-proof squirrel cage induction motor