"carefully combined" — Collocation dictionary inglés

carefully combined collocation
Automatic translation (We do not guarantee its correctness): ostrożnie połączyć
  1. combine verbo + carefully adverbio
    Very loose collocation

    If amber is heated under the right conditions, oil of amber is produced, and in past times this was combined carefully with nitric acid to create "artificial musk" - a resin with a peculiar musky odor.