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3 天前 · A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z ). [1] The definitive visualisation of all 118 elements is the periodic table of the elements, whose history along the principles of the periodic law was one of the ...
2 天前 · List of country calling codes. Worldwide distribution of country calling codes. Regions are coloured by first digit. Country calling codes, country dial-in codes, international subscriber dialing ( ISD) codes, or most commonly, telephone country codes are telephone number prefixes for reaching telephone subscribers in foreign ...
6 天前 · Google Translate is a multilingual neural machine translation service developed by Google to translate text, documents and websites from one language into another. It offers a website interface, a mobile app for Android and iOS, as well as an API that helps developers build browser extensions and software applications. [3] .
3 天前 · The A350 is the first Airbus aircraft largely made of carbon-fibre-reinforced polymers . It has a new fuselage designed around a nine-abreast economy cross-section, up from the eight-abreast A330/A340. It has a common type rating with the A330.
2 天前 · In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn .
6 天前 · Human papillomavirus infection ( HPV infection) is caused by a DNA virus from the Papillomaviridae family. [5] . Many HPV infections cause no symptoms and 90% resolve spontaneously within two years. [1] . In some cases, an HPV infection persists and results in either warts or precancerous lesions. [2] .
3 天前 · Mozilla Firefox, or simply Firefox, is a free and open-source[11] web browser developed by the Mozilla Foundation and its subsidiary, the Mozilla Corporation. It uses the Gecko rendering engine to display web pages, which implements current and anticipated web standards.[12] Firefox is available for Windows 10 or later versions, macOS, and ...
