| 单词 | multiplication constant |
| 释义 | > as lemmasmultiplication constant multiplication constant n. Nuclear Physics the multiplication factor of a fission process. ΘΚΠ the world > matter > physics > atomic nucleus > nuclear fission > [noun] > neutron ratio reproduction factor1918 multiplication factor1941 multiplication constant1945 reproduction constant1950 1945 H. D. Smyth Gen. Acct. Devel. Atomic Energy Mil. Purposes viii. 80 Other fission products are..typically of unstable and relatively unfamiliar nuclei so that it was originally impossible to predict how great an undesirable effect they would have on the multiplication constant. 1962 Newnes Conc. Encycl. Nucl. Energy 111/1 The actual number of neutrons per fission varies considerably, but has an average value of 2·5. This is a high enough gain per cycle to suggest that a chain-reacting system of uranium could be made with a multiplication constant of at least unity. 1994 Trans. Amer. Nucl. Soc. 71 275/2 The racks were impregnated with Boraflex, a compound containing boron to absorb neutrons and reduce the effective multiplication constant. < as lemmas |
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