例句與造句

1. There are some places with High-voltage direct current distribution.
2. Conversely, Edison's control of direct current distribution and generating machinery patents blocked further expansion of Thomson-Houston.
3. It took place during the introduction and rapid expansion of the alternating current standard ( already in use and advocated by several US and European companies ) and its eventual adoption over the direct current distribution system.
4. Mainly because it made moving electricity long distances practical / feasible / easier / cheaper than using DC transmission lines, using the technology then available ( transformers ) when electricity was just becoming a more widely used power source, such as in Thomas Edisons day, the mid-late 1800's . ( Edison was a vocal advocate of DC power distribution by the way . ) This is no longer true as long distance High-voltage direct current distribution is now often used, when appropriate, such as transferring power " long " distances where DC has inherent advantages ( less loss ) over AC, and is now more economical then pure AC transmission . ( In 1980 longest cost-effective distance for DC electricity was determined to be 7, 000 km ( 4, 300 mi ).
5. It's difficult to find direct current distribution in a sentence. 用direct current distribution造句挺難的