Definition

1. Noun:
   • Feedback: The process in which information about the result or output of a system is returned to modify or regulate its future performance or input. This is the primary and most common meaning, especially in technical, cybernetic, and systems contexts.
   • Retroaction: A synonym for feedback, emphasizing the action of returning or feeding back.

Usage Examples

• Noun:
  • Hệ thống này sử dụng phản liên để tự điều chỉnh. (This system uses feedback to self-adjust.)
  • Giáo viên cần phản liên từ học sinh để cải thiện bài giảng. (The teacher needs feedback from students to improve the lecture.)
  • Phản liên tích cực sẽ khuếch đại tín hiệu. (Positive feedback will amplify the signal.)

Advanced Usage

• "phản liên âm": Negative feedback (in electronics or control systems).

  • Mạch ổn áp dựa trên nguyên lý phản liên âm. (The voltage regulator circuit is based on the principle of negative feedback.)

• "vòng phản liên": Feedback loop.

  • Sự chậm trễ trong vòng phản liên có thể gây ra bất ổn. (A delay in the feedback loop can cause instability.)

Variants and Related Words

• Phản hồi (n): Response, reply. Often used more generally for non-technical feedback or answers.
  • Chúng tôi đang chờ phản hồi từ phía đối tác. (We are waiting for a response from our partner.)

Synonyms

• Feedback: Information about a result returned to the source.
• Retroaction: Action that returns or influences an earlier process.
• Response: A reaction to something.

Notes on Usage

• "Phản liên" is a specialized term, most frequently encountered in technical fields such as engineering, cybernetics, systems theory, and electronics. In everyday conversation for general opinions or comments, "phản hồi" is more commonly used.
• It is a compound word formed from "phản" (to reflect, to react) and "liên" (to link, to connect), literally meaning "a connecting reaction."