| 单词 | nier, alfred o. c. |
| 释义 | Nier, Alfred O. C.Nier, Alfred O. C. (Otto Carl)(1911– ) physicist; born in St. Paul, Minn. He was a fellow at Harvard (1936–38), taught at the University of Minnesota (1938–43), and became a physicist at Kellex Corporation, N.Y., before returning to Minnesota as a professor (1945–80). He developed the high-resolution mass spectrometer to study rare isotopes, and (1940) separated and determined the fissionability of uranium-235. |
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