Radio-frequency identification - Wikipedia
14 小时之前 · Radio-frequency identification (RFID) uses electromagnetic fields to automatically identify and track tags attached to objects. An RFID system consists of a tiny radio transponder called a tag, a radio receiver, and a transmitter.When triggered by an electromagnetic …
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George Washington - Wikipedia
14 小时之前 · Washington the Farmer at Mount Vernon, an 1851 portrait by Junius Brutus Stearns. During Washington's lifetime at least 577 slaves lived and worked at Mount Vernon. …
Firefox - Wikipedia
14 小时之前 · Mozilla Firefox, or simply Firefox, is a free and open source [12] web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation.It uses the …
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San Antonio - Wikipedia
14 小时之前 · San Antonio (/ ˌ s æ n æ n ˈ t oʊ n i oʊ / SAN an-TOH-nee-oh; Spanish for "Saint Anthony") is a city in the U.S. state of Texas and the most populous city in Greater San …
Fusion power - Wikipedia
14 小时之前 · The Joint European Torus (JET) magnetic fusion experiment in 1991. Fusion power is a proposed form of power generation that would generate electricity by using heat from …
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Tesla Model S - Wikipedia
14 小时之前 · In 2015, the Model S was the world's best-selling plug-in electric vehicle. It has been the subject of multiple fires , the first in 2013. The car has received numerous accolades …
Auckland - Wikipedia
14 小时之前 · Auckland (/ ˈ ɔː k l ə n d / AWK-lənd; [4] Māori: Tāmaki Makaurau) is a large metropolitan city in the North Island of New Zealand.It has an urban population of about …
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