dây kín
Learn more
After looking up a meaning, choose a textbook or practice activity to keep learning Vietnamese.
Learn letters and pronunciation from the beginning
Open the 10days lesson listAn introductory textbook over ten days. Choose a lesson to read and listen to.
Learn conversation through a story
Read about “Tết, the Third Time”A textbook that teaches conversation through a family story. It is being prepared; see its content and release status.
Practise words and sounds in short activities
Choose from the practice listChoose an activity for vocabulary, tones, listening and other skills.
Meaning
1 senses
▸
A term used in physics referring to a type of string that has no free ends.
vi Các nhà vật lý đang nghiên cứu về tính chất của dây kín.
en Physicists are studying the properties of closed strings.