雷らい管かん

noun

detonator; primer; percussion cap

Technical term for a small explosive device used to trigger a larger explosion. Used in mining, demolition, and military contexts.

• 雷らい管かんをセットしてから、安あん全ぜんな距きょ離りまで離はなれてください。

  After setting the detonator, please move to a safe distance.