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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 · UNICEF (/ˈjuːniˌsɛf/ YOO-nee-SEF), originally called the United Nations International Children's Emergency Fund in full, now officially United Nations Children's Fund,[a] is an agency of the United Nations responsible for providing humanitarian and developmental aid to children worldwide.[3][4] The organization is one of the most widely ...
2 天前 · Probability theory. In probability theory and statistics, a normal distribution or Gaussian distribution is a type of continuous probability distribution for a real-valued random variable. The general form of its probability density function is. The parameter is the mean or expectation of the distribution (and also its median and mode ), while ...
5 天前 · Wireless LAN (WLAN) channels are frequently accessed using IEEE 802.11 protocols. The 802.11 standard provides several radio frequency bands for use in Wi-Fi communications, each divided into a multitude of channels numbered at 5 MHz spacing (except in the 45/60 GHz band, where they are 0.54/1.08/2.16 GHz apart) between the centre frequency of the channel.
1 天前 · Coronation Street (colloquially referred to as Corrie) is a British television soap opera created by Granada Television and shown on ITV since 9 December 1960.[2] The programme centres on a cobbled, terraced street in the fictional Weatherfield, a town based on inner-city Salford, England.[3] Originally broadcast twice weekly, the series began ...
2 天前 · North Macedonia (/ˌmæsɪˈdoʊniə/ MASS-ih-DOH-nee-ə),[c] officially the Republic of North Macedonia,[d] is a landlocked country in Southeast Europe. It shares land borders with Greece to the south, Albania to the west, Bulgaria to the east, Kosovo[e] to the northwest and Serbia to the north.[7] It constitutes approximately the northern ...
1 天前 · The Palace of Versailles ( / vɛərˈsaɪ, vɜːrˈsaɪ / vair-SY, vur-SY; [1] French: château de Versailles [ʃɑto d (ə) vɛʁsɑj] ⓘ) is a former royal residence commissioned by King Louis XIV located in Versailles, about 19 kilometers (12 mi) west of Paris, France . The palace is owned by the government of France and since 1995 has been ...
