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1 天前 · CRISPR (/ ˈ k r ɪ s p ər /) (an acronym for clustered regularly interspaced short palindromic repeats) is a family of DNA sequences found in the genomes of prokaryotic organisms such as bacteria and archaea. These sequences are derived from DNA fragments of bacteriophages that had previously infected the prokaryote. ...
2 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.
3 天前 · Polynesia [a] ( UK: / ˌpɒlɪˈniːziə / POL-in-EE-zee-ə, US: /- ˈniːʒə / -EE-zhə) is a subregion of Oceania, made up of more than 1,000 islands scattered over the central and southern Pacific Ocean. The indigenous people who inhabit the islands of Polynesia are called Polynesians.
2024年6月1日 · List of tz database time zones. The tz database partitions the world into regions where local clocks all show the same time. This map was made by combining version 2023d with OpenStreetMap data, using open source software. [1] This is a list of time zones from release 2024a of the tz database. [2]
2 天前 · C ( pronounced / ˈsiː / – like the letter c) [6] is a general-purpose programming language. It was created in the 1970s by Dennis Ritchie and remains very widely used and influential. By design, C's features cleanly reflect the capabilities of the targeted CPUs. It has found lasting use in operating systems, device drivers, and protocol ...
2 天前 · The iPad is a brand of iOS and iPadOS-based tablet computers that are developed by Apple, first introduced on January 27, 2010.The iPad range consists of the original iPad lineup and the flagship products iPad Mini, iPad Air, and iPad Pro.The iPhone's iOS operating system (OS) was initially used for the iPad but in September 2019, its OS was switched to a fork of iOS called iPadOS that has ...
2 天前 · Ernest Miller Hemingway ( / ˈɜːrnɪst ˈhɛmɪŋweɪ /; July 21, 1899 – July 2, 1961) was an American novelist, short-story writer and journalist. Best known for an economical, understated style that significantly influenced later 20th-century writers, he is often romanticized for his adventurous lifestyle, and outspoken and blunt public ...
