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北京石油化工学院2026年研究生招生接收调剂公告
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地瓜地瓜

金虫 (初入文坛)

[求助] 微谱求助!

13C NMR (500 MHz, MeOD) δ 21.043,23.302,23.509,23.754,25.206,25.659,25.897,27.279,27.838,28.176,32.658,34.630,37.640,37.968,38.068,38.148,39.528,39.845,40.922,41.077,41.330,41.691,53.686,63.017,65.759,72.188,72.459,78.707,127.935,138.694
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lifeliuyan

至尊木虫 (职业作家)

按从小到大顺序输入,数字间用英文半角逗号(,)分隔例如:
如:21.4,30.4,37.4,73.2,73.7,125.6,126.6,139.6,140.2,168.2
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