문장의 when은 관계부사인가요, 접속사인가요?

“In the early years of space travel, these spin-offs generally occurred by chance, when a practical use of a new technology was accidentally discovered.”에서 when은 관계부사인가요, 접속사인가요?

댓글 1

  • 수련2022.08.12

    도움 주셔서 감사합니다!

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