This image released by the US Navy, shows the Office of Naval Research's Electromagnetic Railgun located at the Naval Surface Warfare Center Dahlgren Division. — PHOTO: AFP.
美国海军放出的图片，展示了美国海军研究局位于美国海军水面作战中心达尔格伦分部的电磁轨道炮——PHOTO： afp。
This image released by the US Navy, shows the Office of Naval Research's Electromagnetic Railgun located at the Naval Surface Warfare Center Dahlgren Division. — PHOTO: AFP.
美国海军放出的图片，展示了美国海军研究局位于美国海军水面作战中心达尔格伦分部的电磁轨道炮——PHOTO： afp。
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