例句與造句

1. All commercial rubidium frequency standards operate by disciplining a crystal oscillator to the rubidium hyperfine transition of.
2. In the presence of a magnetic field the 1S 2S transition splits into two hyperfine transitions with slightly different frequencies.
3. The frequency associated with the states'energy separation is in the microwave region, making it possible to drive hyperfine transitions using microwave radiation.
4. Since the beginning of development in the 1950s, atomic clocks have been based on the hyperfine transitions in hydrogen-1, caesium-133, and rubidium-87.
5. Cs, the unperturbed ground-state hyperfine transition frequency of the caesium 133 atom, to be when expressed in the unit Hz, which is equal to s  " 1.
6. It's difficult to find hyperfine transitions in a sentence. 用hyperfine transitions造句挺難的
7. Atomic vapor laser isotope separation ( "'AVLIS "') is a method by which specially tuned lasers are used to separate isotopes of uranium using selective ionization of hyperfine transitions.
8. Carl Sagan and Frank Drake considered the hyperfine transition of hydrogen to be a sufficiently universal phenomenon so as to be used as a base unit of time and length on the Pioneer plaque and later Voyager Golden Record.
9. In a hydrogen maser clock the gas emits microwaves ( the gas " mases " ) on a hyperfine transition, the field in the cavity oscillates, and the cavity is tuned for maximum microwave amplitude.
10. The 13th General Conference on Weights and Measures of 1967 defined a second as : " the duration of 9, 192, 631, 770 cycles of microwave light absorbed or emitted by the hyperfine transition of caesium-133 atoms in their ground state undisturbed by external fields ".
11. Ramsey and his PhD student Daniel Kleppner developed the atomic hydrogen maser, looking to increase the accuracy with which the the second has been defined based on 9, 192, 631, 770 hyperfine transition of a cesium-133 atom; the atomic clock which is used to set this standard is an application of Ramsey's work.