Yahoo奇摩 網頁搜尋

搜尋結果

  1. Wikipedia is written by volunteer editors and hosted by the Wikimedia Foundation, a non-profit organization that also hosts a range of other volunteer projects : Commons. Free media repository. MediaWiki. Wiki software development. Meta-Wiki. Wikimedia project coordination. Wikibooks. Free textbooks and manuals.

  2. en.wikipedia.org › wiki › MosquitoMosquito - Wikipedia

    Mosquitoes have a slender segmented body, one pair of wings, three pairs of long hair-like legs, and specialized, highly elongated, piercing-sucking mouthparts. All mosquitoes drink nectar from flowers; females of some species have in addition adapted to drink blood.

  3. The president of the United States is the head of state and head of government of the United States, [1] indirectly elected to a four-year term via the Electoral College. [2] The officeholder leads the executive branch of the federal government and is the commander-in-chief of the United States Armed Forces. [3]

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

    For other uses, see Platypus (disambiguation). The platypus ( Ornithorhynchus anatinus ), [3] sometimes referred to as the duck-billed platypus, [4] is a semiaquatic, egg-laying mammal endemic to eastern Australia, including Tasmania.

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

    Lidar ( / ˈlaɪdɑːr /, also LIDAR, LiDAR or LADAR, an acronym of "light detection and ranging" [1] or "laser imaging, detection, and ranging" [2]) is a method for determining ranges by targeting an object or a surface with a laser and measuring the time for the reflected light to return to the receiver.

  6. en.wikipedia.org › wiki › IP_CodeIP code - Wikipedia

    It is defined by the International Electrotechnical Commission (IEC) under the international standard IEC 60529 [1] which classifies and provides a guideline to the degree of protection provided by mechanical casings and electrical enclosures against intrusion, dust, accidental contact, and water.

  7. The Kalman filtering equations provide an estimate of the state and its error covariance recursively. The estimate and its quality depend on the system parameters and the noise statistics fed as inputs to the estimator. This section analyzes the effect of uncertainties in the statistical inputs to the filter. [44]

  8. en.wikipedia.org › wiki › UltravioletUltraviolet - Wikipedia

    Ultraviolet ( UV) light is electromagnetic radiation of wavelengths of 10–400 nanometers, shorter than that of visible light, but longer than X-rays. UV radiation is present in sunlight, and constitutes about 10% of the total electromagnetic radiation output from the Sun. It is also produced by electric arcs, Cherenkov radiation, and ...

  9. The Lockheed Martin/Boeing F-22 Raptor is an American twin-engine all-weather stealth fighter aircraft developed and produced for the United States Air Force (USAF). As a product of the USAF's Advanced Tactical Fighter (ATF) program the aircraft was designed as an air superiority fighter, but also incorporates ground attack, electronic warfare ...

  10. Spotted lanternfly nymphs on Vitis labrusca in Berks County, Pennsylvania, United States, in early July 2018. Ailanthus altissima is a tree native to China but is invasive to many other areas worldwide. It is considered to be the key host for L. delicatula and plays an important role in the lanternfly life cycle.

  1. 其他人也搜尋了