求兩篇1972年的文章
求1972年《Science》的兩篇文章PDF全文,原子鐘環(huán)球飛行實(shí)驗(yàn):
Hafele J C,Keating R E. Around - the -world atomic-clocks: predicted relativistic time gains[J]. Science,1972,177: 166-167;
Hafele J C,Keating R E.Around-the-world atomic clocks: observed relativistic time gains[J]. Science,1972,177: 168-170.
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