periscope

  • periscope - 潛望鏡
  • periscope condition - 潛望浮態{潛艇}
  • periscope magnification - 潛望鏡放大率
  • periscope mast well - 潛望鏡桅圍井
  • periscope sextant - 潛望六分儀
  • periscope wake - 潛望鏡航跡

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