English to Spanish Science Linguistics Translation

The newly produced code, the new semiotic unit, may be either a moderate innovation or a radical innovation, with respect to the codes that contribute to its genesis. If the new code is a moderate innovation, it adheres closely to either the matrix code or the target code. In the former case, the translation is commonly called "close translation".


Necesito la acepción correcta de close translation, ya que he encontrado información tanto de traducción cercana como de traducción cerrada. Saludos.