例句與造句

1. Yields are higher in fast fission or in fission of heavier nuclei.
2. Fast fission of in the secondary stage of a nuclear weapon contributes greatly to fallout.
3. Fast fission or fission of some heavier actinides will produce 121m Sn at higher yields.
4. The fast fission of also makes a significant contribution to the power output of some fast-neutron reactors.
5. For example, its yield from U-235 is 0.0007 % per thermal fission and 0.002 % per fast fission.
6. It's difficult to find fast fission in a sentence. 用fast fission造句挺難的
7. It was estimated that 15 20 % of the energy was released by fusion ( 60 80 kilotons ) and the rest was from fast fission.
8. In the proposed water-cooled supercritical water reactor ( SCWR ), the proportion of fast fissions may exceed 50 %, making it technically a fast neutron reactor.
9. "' BES-5 "'is an acronym for a Russian thermo-electric generator design in which the heat source is a fast fission nuclear reactor ( FNR ).
10. Pressurized water reactors, like all thermal reactor designs, require the fast fission neutrons to be slowed down ( a process called moderation or thermal ) in order to interact with the nuclear fuel and sustain the chain reaction.
11. However, fast neutrons have a better fission / capture ratio for many nuclides, and each fast fission releases a larger number of neutrons, so a fast breeder reactor can potentially " breed " more fissile fuel than it consumes.
12. The Teller Ulam-based " Ivy Mike " device had a much greater yield of 10.4 Mt, but most of this also came from fission : 77 % of the total came from fast fission of its natural-uranium tamper.
13. The fast fission of the secondary jacket in fission-fusion-fission bombs is sometimes referred to as a " third stage " in the bomb, but it should not be confused with the obsolete true three-stage thermonuclear design, in which there existed another complete tertiary fusion stage.
14. This eliminated fast fission by the fusion-stage neutrons, so that approximately 97 % of the total yield resulted from thermonuclear fusion alone ( as such, it was one of the " cleanest " nuclear bombs ever created, generating a very low amount of fallout relative to its yield ).
15. The design of " Grapple Y " was notably successful because much of its yield came from its thermonuclear reaction instead of from the fast fission of a heavy uranium-238 tamper-hence making it a true H-bomb, and also because its yield had been closely predicted indicating that its designers understood what they were doing.
16. It is not fissile, but is a fertile material : it can capture a slow neutron and after two beta decays become fissile plutonium-239 . Uranium-238 is fissionable by fast neutrons, but cannot support a chain reaction because inelastic scattering reduces neutron energy below the range where fast fission of one or more next-generation nuclei is probable.
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