Yahoo香港字典 搜尋

登入
  1. 更多

  1. Oxford American Dictionary

    vacuum extraction

    • IPA[ˈvakyəm ikˌstrakSHən]
    • n.
      the application of reduced pressure to extract something, particularly to assist childbirth or as a method of abortion, or as a technique for removing components of a chemical mixture.

    • noun: vacuum extraction