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個(gè)人中心收藏查看我的收藏0有用+10263播報(bào)討論上傳視頻自然數(shù)之一展開3個(gè)同名詞條263（二百六十三）是262與264之間的自然數(shù)，是一個(gè)質(zhì)數(shù)、奇數(shù)。中文名二百六十三
別    名貳佰陸拾叁
羅馬數(shù)字CCLXIII
二進(jìn)制100000111
三進(jìn)制100202
四進(jìn)制10013
八進(jìn)制407
十二進(jìn)制19B
十六進(jìn)制107
倒數(shù)循環(huán)節(jié)262位 [6]

目錄
1在數(shù)學(xué)中?數(shù)學(xué)性質(zhì)?倍數(shù)表?次方表2在人類文化中3在科學(xué)中4在地理中5在天文中6在其他領(lǐng)域中
在數(shù)學(xué)中
播報(bào)編輯數(shù)學(xué)性質(zhì)第56個(gè)素?cái)?shù)。前一個(gè)為257，后一個(gè)為269。 [1]非正規(guī)質(zhì)數(shù)。前一個(gè)為257，后一個(gè)為271。（OEIS中的數(shù)列A000928） [2]陳素?cái)?shù)。263+2=265=5×53。前一個(gè)為257，后一個(gè)為269。（OEIS中的數(shù)列A109611） [3]滿足3n-1的素?cái)?shù)。前一個(gè)為257，后一個(gè)為269。（OEIS中的數(shù)列A003627） [4]安全質(zhì)數(shù)。對應(yīng)索菲熱爾曼質(zhì)數(shù)為131。前一個(gè)為227，后一個(gè)為347。（OEIS中的數(shù)列A005385） [5]全循環(huán)質(zhì)數(shù)。的循環(huán)節(jié)為0038022813688212927756653992395437262357414448669201520912547528517110266159695817490494296577946768060836501901140684410646387832699619771863117870722433460076045627376425855513307984790874524714828897338403041825095057034220532319391634980988593155893536121673（共263-1=262位）。前一個(gè)為257，后一個(gè)為269。（OEIS中的數(shù)列A001913） [6]十進(jìn)制的等數(shù)位數(shù)。快樂數(shù)。263→22+62+32=49→42+92=97→92+72=130→12+32+02=10→12+02=1。前一個(gè)為262，后一個(gè)為280。（OEIS中的數(shù)列A007770） [7]5個(gè)連續(xù)質(zhì)數(shù)和（43+47+53+59+61）倍數(shù)表倍數(shù)表倍數(shù)乘積12632526378941,05251,31561,57871,84182,10492,367102,630112,893123,156133,419143,682153,945164,208174,471184,734194,997205,260215,523225,786236,049246,312256,575266,838277,101287,364297,627307,890318,153328,416......次方表次方表倍數(shù)乘積1263269,169318,191,44744,784,350,56151,258,284,197,5436330,928,743,953,809787,034,259,659,851,767822,890,010,290,541,014,72196,020,072,706,412,286,871,623101,583,279,121,786,431,447,236,849......
在人類文化中
播報(bào)編輯宜蘭縣壯圍鄉(xiāng)的郵遞區(qū)號為263津巴布韋的國際電話區(qū)號為263大和級戰(zhàn)艦是日本海軍所建造戰(zhàn)艦的艦型，全長263米九七式艦上攻擊機(jī)為日本海軍于1930年代后期開發(fā)的艦上攻擊機(jī)，巡航速度為263km/h2008年10月3日，美國國會眾議院以263票贊成171票反對投票通過經(jīng)過修改的總額達(dá)7000億美元的2008年經(jīng)濟(jì)穩(wěn)定緊急法案維克斯VC.1維京的最大速度為263英里玉郎漫畫出版至1992年9月19日第263期停刊
在科學(xué)中
播報(bào)編輯??的原子量為263。1983年的美國針對三聚氰胺進(jìn)行動(dòng)物實(shí)驗(yàn)研究，49只雄鼠和50只雌鼠每天被喂食263毫克的三聚氰胺20周之后，約的雄鼠身上被驗(yàn)出有癌細(xì)胞，而經(jīng)過103周相當(dāng)于2年多以后，49只雄鼠全部都帶有癌細(xì)胞
在地理中
播報(bào)編輯香港一共有263個(gè)島嶼亞歷山大縣 (北卡羅萊納州)的面積為263平方英里伊塔斯加縣的水域面積為263平方英里
在天文中
播報(bào)編輯NGC 263 是鯨魚座的一個(gè)星系
在其他領(lǐng)域中
播報(bào)編輯公元263年（263年）公元前263年平年的第263天是9月20日閏年的第263天是9月19日H.263是由ITU-T制定的視頻會議用的低碼率視頻編碼標(biāo)準(zhǔn)，屬于視頻編解碼器263也可表示為蘇聯(lián)坦克殲擊車：263工程（或Obj.263）新手上路成長任務(wù)編輯入門編輯規(guī)則本人編輯我有疑問內(nèi)容質(zhì)疑在線客服官方貼吧意見反饋投訴建議舉報(bào)不良信息未通過詞條申訴投訴侵權(quán)信息封禁查詢與解封?2024?Baidu?使用百度前必讀?|?百科協(xié)議?|?隱私政策?|?百度百科合作平臺?|?京ICP證030173號?京公網(wǎng)安備11000002000001號window.PAGE_DATA= 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263263合金是一種可時(shí)效硬化的Ni-Co-Cr-Mo合金，設(shè)計(jì)用于在退火狀態(tài)下將極佳的時(shí)效強(qiáng)度特性與出色的制造特性相結(jié)合。 雖然其在高溫下的強(qiáng)度不如Waspaloy或R-41高，但比這些合金更容易形成或焊接。 263合金表現(xiàn)出優(yōu)異的中溫拉伸延展性，并且通常不受γ相強(qiáng)化合金常見的應(yīng)變時(shí)效開裂問題的影響。該合金是先進(jìn)超超臨界機(jī)組用候選材料，具有組織穩(wěn)定性，是時(shí)效強(qiáng)化鈷鎳基變形高溫合金，含有較高量的鈷及多種強(qiáng)化元素，該合金在815～870℃有較高的抗拉強(qiáng)度和抗蠕變能力、良好的抗氧化性和耐腐蝕、在冷熱反復(fù)交替作用下有較高的疲勞強(qiáng)度以及良好的成形性和焊接性。用于渦輪發(fā)動(dòng)機(jī)渦輪盤、葉片、高溫緊固件、卡箍、密封圈及彈性元件等。263合金是經(jīng)過沉淀硬化，同時(shí)為了固溶強(qiáng)化又添加了鉬的一種鎳-鉻-鈷合金。263合金不但有高強(qiáng)度和耐腐蝕性，而且在焊接結(jié)構(gòu)中還表現(xiàn)出好的成形性和高溫延展性。  應(yīng)用領(lǐng)域：合金在鍛造時(shí)易產(chǎn)生內(nèi)裂，允許重錘打擊。鋼錠裝爐溫度不高于700℃，低溫區(qū)域先預(yù)熱20-30分鐘，***終加熱溫度1150℃-1180℃，開鍛溫度不低于1050℃，終鍛溫度不低于950℃。 2、該合金的晶粒度平均尺寸與鍛件的變形程度、終鍛溫度密切相關(guān)。Haynes263合金結(jié)合了適合各種制造的特性 應(yīng)用于航空渦輪發(fā)動(dòng)機(jī)和工業(yè)渦輪機(jī)應(yīng)用。 這些包括低溫燃燒器，轉(zhuǎn)換襯管和一些環(huán)形部件 壓力器皿、高壓儲藏罐、高壓管道、熱交換器(化學(xué)加工工業(yè))。 　　石油天然氣管道、熱交換器管件。　　污水處理系統(tǒng)?！　〖垵{和造紙工業(yè)分類器、漂白設(shè)備、貯存處理系統(tǒng)?！　?高強(qiáng)度耐腐蝕環(huán)境下的回轉(zhuǎn)軸、壓榨輥、葉片、葉輪等?！　≥喆蚩ㄜ嚨呢浳锵洹　∈称芳庸ぴO(shè)備 PRODUCT PARAMETERS 產(chǎn)品參數(shù) 化學(xué)成分%CCrMoMnNiCoPbSSiBiBCuAlTiFeMin0.0419.05.6余量19.01.9Max0.0821.06.10.6余量21.00.0020.0070.40.00010.0050.20.62.80.7 上一頁：N07263