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  1. en.wikipedia.org › wiki › CapacitorCapacitor - Wikipedia

    2024年5月23日 · Electronic symbol. In electrical engineering, a capacitor is a device that stores electrical energy by accumulating electric charges on two closely spaced surfaces that are insulated from each other. The capacitor was originally known as the condenser, [1] a term still encountered in a few compound names, such as the condenser microphone.

  2. 3 天前 · Ancient Egypt was a civilization of ancient Northeast Africa.It was concentrated along the lower reaches of the Nile River, situated in the place that is now the country Egypt.Ancient Egyptian civilization followed prehistoric Egypt and coalesced around 3100 BC (according to conventional Egyptian chronology) with the political unification of Upper and Lower Egypt under Menes (often identified ...

  3. 1 天前 · ARM (stylised in lowercase as arm, formerly an acronym for Advanced RISC Machines and originally Acorn RISC Machine) is a family of RISC instruction set architectures (ISAs) for computer processors. Arm Ltd. develops the ISAs and licenses them to other companies, who build the physical devices that use the instruction set.

  4. en.wikipedia.org › wiki › ShinkansenShinkansen - Wikipedia

    3 天前 · Etymology Shinkansen (新幹線) in Japanese means 'new trunk line' or 'new main line', but this word is used to describe both the railway lines the trains run on and the trains themselves. In English, the trains are also known as the bullet train. The term bullet train (弾丸列車, dangan ressha) originates from 1939, and was the initial name given to the Shinkansen project in its earliest ...

  5. en.wikipedia.org › wiki › CopperCopper - Wikipedia

    4 天前 · Copper is a chemical element; it has symbol Cu (from Latin cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkish-orange color. Copper is used as a conductor of heat and electricity, as a building material, and as a ...

  6. en.wikipedia.org › wiki › 5G5G - Wikipedia

    4 天前 · Wireless network technologies. In telecommunications, 5G is the fifth-generation technology standard for cellular networks, which cellular phone companies began deploying worldwide in 2019, and is the successor to 4G technology that provides connectivity to most current mobile phones. Like its predecessors, 5G networks are cellular networks, in ...

  7. en.wikipedia.org › wiki › OsakaOsaka - Wikipedia

    2 天前 · Osaka (Japanese: 大阪市, Hepburn: Ōsaka-shi, pronounced; commonly just 大阪, Ōsaka ) is a designated city in the Kansai region of Honshu in Japan, and one of the three major cities of Japan (Tokyo-Osaka-Nagoya).It is the capital of and most populous city in Osaka Prefecture, and the third-most populous city in Japan, following the special wards of Tokyo and Yokohama.

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