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1. Oxford American Dictionary

   double-acting

   • IPA[ˌdəbəl ˈaktiNG]

   • adj.
     denoting a device or product that combines two different functions；(of an engine) having pistons pushed from both sides alternately.
2. • 釋義
   • 相關詞

   adj.

   形容詞

   • 1. denoting a device or product that combines two different functions double-acting hydraulic shock absorbers double-acting baking powder
   • ▪ (of an engine) having pistons pushed from both sides alternately.

   double act

   • n.
     a performance involving two people: the best comic double act of its time

   Oxford Dictionary

3. • 更多解釋

   double-acting

   • adj.
     (of a device or product) combining two different functions: it is double-acting: it guards your radiator against freeze-ups and helps prevent rust

   Oxford Dictionary