"03583419-n"^^ . "ion engine"@en-us . "0"^^ . "103583419"^^ . . . . . . "0"^^ . . "a type of reaction-propulsion engine to propel rockets in space; a stream of positive ions is accelerated to a high velocity by an electric field"@en-us . "103451188"@en-us . . . "ion engine"^^ . .