Initial investigations indicated that the accident aboard the hunter-killer submarine involved a piece of air purification equipment in its forward section. It caused only superficial damage.
初始调查显示该攻击型潜艇事故包括一处空气净化系统，其首部受到轻微损害。
Initial investigations indicated that the accident aboard the hunter-killer submarine involved a piece of air purification equipment in its forward section. It caused only superficial damage.
初始调查显示该攻击型潜艇事故包括一处空气净化系统，其首部受到轻微损害。
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