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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 ...
- July 2016; 7 years ago
- Telecommunications
3 天前 · according to International Monetary Fund estimates [n 1] [1] Countries by nominal GDP in 2019 [n 2] > $20 trillion. $10–20 trillion. $5–10 trillion. $1–5 trillion. $750 billion – $1 trillion. $500–750 billion. $250–500 billion.
2 天前 · Hong Kong [d] is a special administrative region of the People's Republic of China. With 7.4 million residents of various nationalities [e] in a 1,104-square-kilometre (426 sq mi) territory, Hong Kong is one of the most densely populated territories in the world. Hong Kong was established as a colony of the British Empire after the Qing dynasty ...
1 天前 · Chongqing is the largest of the four direct-controlled municipalities of the People's Republic of China. The municipality is divided into 38 subdivisions (3 were abolished in 1997, and Wansheng and Shuangqiao districts were abolished in October 2011 [74] ), consisting of 26 districts, 8 counties, and 4 autonomous counties.
2 天前 · Definitions An enlargeable map of the 939 core-based statistical areas (CBSAs) of the United States and Puerto Rico as of 2020; the 384 MSAs are shown in medium green .In 2023, OMB revised the delineations of these CBSAs. The U.S. Office of Management and Budget defines a set of core based statistical areas (CBSAs) throughout the country, which are composed of counties and county equivalents.
2 天前 · The United States is a leader in the development of artificial intelligence technology and has maintained a space program since the late 1950s, with plans for long-term habitation of the Moon. [304] [305] In 2022, the United States was the country with the second-highest number of published scientific papers. [306]
2 天前 · Amazon.com, Inc.,[1] doing business as Amazon (/ˈæməzɒn/, AM-ə-zon; UK also /ˈæməzən/, AM-ə-zən), is an American multinational technology company, engaged in e-commerce, cloud computing, online advertising, digital streaming, and artificial intelligence.[5] It is considered one of the Big Five American technology companies; the ...
