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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.
    • 釋義

    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.