释义 |
ultrafine ultrafine (ˈʌltrəˌfaɪn; ˌʌltrəˈfaɪn) adj1. extremely small or delicate2. (Metallurgy) (of metals) having an extremely high level of purityul•tra•fine (ˌʌl trəˈfaɪn) adj. too small to be visible under a light microscope: ultrafine cell structure. [1955–60] Translations |