touchhole

常见例句

• Flash in the pan, an explosion of gunpowder without any communication beyond the touchhole.
  池內火花，火葯爆炸，卻未到達槍口外。
• they apparently were fired by applying a red-hot wire to a touchhole drilled through the top.
  ）類似舊式汽水瓶，顯然經由連至頂部火門的紅熱導線而發射。
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