例句與造句

1. Operating frequencies range from utility frequency ( 50 or 60 conductor.
2. Beacon designs and develops products aimed at utility frequency regulation for power grid operations.
3. Most other countries electrified their railways at the utility frequency of 50 / 60 Hz.
4. AFAIK, there's generally little relevance of the utility frequency to the radio portion.
5. Electromagnetic wattmeters are used for measurement of utility frequency and audio frequency power; other types are required for radio frequency measurements.
6. It's difficult to find utility frequency in a sentence. 用utility frequency造句挺難的
7. Even by the middle of the 20th century, utility frequencies were still not entirely standardized at the now-common 50 Hz or 60 Hz.
8. I expect that " modern " ( 1941 and after ) TV transmitters use a crystal controlled oscillator rather than the utility frequency for the deflection.
9. On 25 Hz power, say, they would . ( Incidentally, there is still some 25 Hz generation at Niagara Falls-- see utility frequency.
10. To reduce the size of the model components, the network analyzer often was energized at a higher frequency than the 50 Hz or 60 Hz utility frequency.
11. Our article on Utility frequency notes that utilities try to keep quite close to the nominal frequency so that synchronous clocks only deviate a few seconds from actual time.
12. The Fuji River also marks the divide of Japan s electrical grid, with the utility frequency of 50 hertz to the east, and 60 hertz to the west.
13. Conversely, frequencies used for some railway electrification systems were much lower ( e . g . 16.7 Hz and 25 Hz ) than normal utility frequencies ( 50 60 Hz ) for historical reasons concerned mainly with the limitations of early electric traction motors.
14. :Rather than being a hoax; it does seem to me that this is a genuine stub on a perfectly valid subject-although it clearly needs a lot of work and fleshing out with information from reliable sources-or perhaps merged as a section on " forensic applications " in the "'utility frequency "'article.
15. Many other combinations of voltage and utility frequency were formerly used, with frequencies between 25 Hz and 133 Hz and voltages from 100 V to 250 V . Direct current ( DC ) has been almost completely displaced by alternating current ( AC ) in public power systems, but DC was used especially in some city areas to the end of the 20th century.