Petitjean and Scannapieco are working together on the clustering of heavy elements observed in quasar spectra.

佩提特金与史坎纳皮科正合作探讨类星体光谱中观测到的重元素群集现象。

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Scannapieco is still run by direct descendents of the original founder Don Emilio Scannapieco, using the same traditional recipes, machines and techniques.

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