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  1. 5 天前 · NIL Technology is an optical solutions company designing, developing, and manufacturing optical elements and components using high-precision nanoscale features NIL Technology (NILT) is a solutions company at the forefront of design, development, and mass production of revolutionary meta-optics (or metalenses) and meta-optics based devices, including our new metaEye Ultra-Compact Camera.

  2. 4 天前 · Wikipedia®和维基百科标志是维基媒体基金会的注册商标;维基维基媒体基金会的商标。 维基媒体基金会是按美国国內稅收法501(c)(3)登记的非营利慈善机构。 隐私政策 关于维基百科 免责声明 行为准则 开发者 统计 Cookie声明 手机版视图

  3. 1 天前 · 阿富汗斯坦(普什图语和达利语: افغانستان ),簡稱阿富汗,是位于亚洲中南部的内陆国家,坐落在亚洲的心脏地区。根据地理分区的不同定义,阿富汗被认为处在南亚、中亚、西亚、中东。阿富汗是擁有多样文化的国家,因地理上位于东方与西方的交界點,古时曾是重要的贸易中心和游牧 ...

  4. 3 天前 · Wikipedia®和维基百科标志是维基媒体基金会的注册商标;维基维基媒体基金会的商标。 维基媒体基金会是按美国国內稅收法501(c)(3)登记的非营利慈善机构。 隐私政策 关于维基百科 免责声明 行为准则 开发者 统计 Cookie声明 手机版视图

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

    1 天前 · The number π (/ p aɪ /; spelled out as "pi") is a mathematical constant that is the ratio of a circle's circumference to its diameter, approximately equal to 3.14159.The number π appears in many formulae across mathematics and physics.It is an irrational number, meaning that it cannot be expressed exactly as a ratio of two integers, although fractions such as are commonly used to ...

  6. en.wikipedia.org › wiki › AT&TAT&T - Wikipedia

    2 天前 · AT&T Inc., simply known as AT&T, an abbreviation for its former name, the American Telephone and Telegraph Company, is an American multinational telecommunications holding company headquartered at Whitacre Tower in Downtown Dallas, Texas. [4] It is the ...

  7. 4 天前 · Wikipedia®和维基百科标志是维基媒体基金会的注册商标;维基维基媒体基金会的商标。 维基媒体基金会是按美国国内税收法501(c)(3)登记的非营利慈善机构。 隐私政策 关于维基百科 免责声明 行为准则 开发者 统计 Cookie声明 手机版视图