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1943年,第二次世界大战正在激烈地进行。美国海军进行了一系列旨在使敌方雷达无法探测到盟军舰只的试验。试验结果从未公开过。人们只知道,最后一次试验被称为“费城试验”……
In 1943, the Second World War was fiercely underway. The U.S. Navy conducted a series of experiments aimed at preventing enemy radars from detecting allied ships. The test results have never been published. People only know that the last test was called the “Philadelphia Test.”