Translation

複数の付録 / 補遺 / 添付資料

Meaning

Appendices is a formal plural of appendix. It usually means extra sections at the end of a report, book, contract, or paper that contain supporting details. Appendixes is also correct, but appendices is common in academic and technical writing.

Examples

• 付録には元データと調査票が含まれています。
  The appendices include the raw data and questionnaire.
• 詳細な計算は付録に移してください。
  Move the detailed calculations to the appendices.