配極曲面 的英文怎麼說

中文拼音 [pèijíqūmiàn]
配極曲面 英文
polar reciprocal surface
  • 配 : Ⅰ動詞1 （兩性結合） join in marriage 2 （使動物交配） mate （animals） 3 （按適當的標準或比例加以...
  • 極 : i 名詞1 （頂點; 盡頭） the utmost point; extreme 2 （地球的南北兩端; 磁體的兩端; 電源或電器上電流...
  • 曲 : 曲名詞1 （一種韻文形式） qu a type of verse for singing which emerged in the southern song and ji...
  • 面 : Ⅰ名詞1 （頭的前部; 臉） face 2 （物體的表面） surface; top 3 （外露的一層或正面） outside; the ri...
  1. I had often stood on the banks of the concord, watching the lapse of the current, an emblem of all progress, following the same law with the system, with time, and all that is made ; the weeds at the bottom gently bending down the stream, shaken by the watery wind, still planted where their seeds had sunk, but erelong to die and go down likewise ; the shining pebbles, not yet anxious to better their condition, the chips and weeds, and occasional logs and stems of trees that floated past, fulfilling their fate, were objects of singular interest to me, and at last i resolved to launch myself on its bosom and float whither it would bear me

    我常站在康科德河的岸邊，望著逝去的流水- - -它是一切過程的象徵，和宇宙，和時間及一切造物受同一法則的支配；那河底的水草隨著水流輕柔地彎曲，彷彿受到水底清風的吹拂，此刻還在水底紮根，但不久后就會凋零並隨波濤逝去；那閃亮的鵝卵石- - -它們還不急著尋找更好的去處，那砂石碎屑、藤蔓野草，和那偶爾從水面漂過、奔向命運盡頭的圓木、樹干，都使我產生了極大的興趣，我最終決定泛舟于康科德河的胸膛之上，隨它將我載去任何地方。
  2. The thesis developed the optimization design software of geometric parameter for the worm gear including strength check module, the drawing contact lines module, the change lines of tooth thickness of worm, and the parametric modelling software for the reducer which includes parametric modelling of parts and assembly. the cad prototype system is very convenient because of its accessible interfere, simple operation and written in chinese. by input design parameters ， the cad system can make optimization design and strength check for the worm gear ， draw contact lines of tooth flank of worm - gear and change line of tooth thickness of worm ， judge if the tooth flanks of worm undercut and if the sideward tooth of worm - gear hob come to a point ， make project design and structure design for the reducer and draw its 2d parts and assembly

    研究和開發了平面二次包絡環面蝸桿傳動的參數優化設計和校核軟體系統：包括幾何參數設計計算模塊，強度校核模塊，繪制齒面接觸線模塊，蝸桿齒厚變化曲線模塊和蝸桿根切判別模塊；開發了平面二次包絡環面蝸桿減速器外形與結構尺寸數據庫以及傳動效率數據庫，建立了平面二次包絡環面蝸桿傳動公差及極限偏差數據庫；開發了平面二次包絡環面蝸桿減速器參數化建模軟體：包括零部件的參數化建模模塊和裝配圖的參數化建模模塊，其中零部件的參數化建模包括蝸桿軸系的參數化建模、蝸輪軸系的參數化建模、箱體的參數化建模、端蓋的參數化建模、軸承的參數化建模和其它零部件的參數化建模軟體模塊。
  3. The results indicated that the dimension, shape and purity of base material could meet the functional demand of solid lubricant ; the thermal decomposition temperature of ptfe resin exceeds 400 c, but organic and inorganic packing filler added in ptfe made the water absorption rate of composite material increased, melting temperature and decomposition temperature decreased, in the meanwhile oxidative decomposition reaction was accompanied ; polar groups such as c = o, c - o - c and so on in the carbon fiber surface is advantageous to increase compatibility with other components and interlayer shearing strength ; uniform design experimental method could help to find the relationship between formula and frictional property by relatively small tests. the developing trend of each formula ' s friction coefficient could be showed by fitting curve ; the friction coefficient with no copper powder or graphite in formula was relatively big. this fact showed that copper powder and graphite should be used cooperatively ; it was found that when the ratio of copper powder to graphite by weight is 15 : 60, 30 : 30 - 40 and 60 : 15 - 30 respectively, the friction coefficient was relatively small. the degree of crystallinity of pure ptfe reached maximum by air cooling and the abrasion loss also reached maximum among three ones ; at the same time, the abrasion loss of solid lubricant sample was also the biggest among three ones ; when solid lubricant matched with 45 # steel axle or gcrl5 steel axle, lubricant transfer film could be formed on metal surface, thus direct contact between the surface of metal friction pair rings was reduced. their working life was elongated extremely ; there was mainly much graphite, a little ptff, moo3, feso4, cus and so on in lubricant transfer film

    試驗結果表明：所選原料的尺寸、形狀及純度可滿足固體潤滑劑的性能要求；聚四氟乙烯樹脂熱分解溫度超過400 ，但在ptfe中加入無機填料會使復合材料吸水率提高，熔融溫度及分解溫度降低，且伴有氧化分解反應；碳纖維表面含有c = o及c - o - c等極性基團，有利於提高其與其它組分的相容性，提高層間剪切強度；均勻設計試驗方法能夠用較少的試驗次數找出配方與摩擦性能間的關系，擬合曲線基本能表示各配方的摩擦系數發展趨勢；配方中不加銅粉或不加石墨，其摩擦系數均較高，說明銅粉和石墨應該配合使用；當銅粉15份、石墨60份時，銅粉30份、石墨30 - 40份時，銅粉60 、石墨15 - 30份時，摩擦系數均具有較低值；純聚四氟乙烯樹脂在空氣冷卻時結晶度最大，磨損量也是三者中最大的；同時，固體潤滑劑試樣在空氣冷卻時的磨損量也是三者中最大的：不論是固體潤滑劑與45 #鋼軸配副或是固體潤滑劑鑲嵌入銅套后與gcr15鋼軸配副，在金屬表面均可形成潤滑轉移膜，從而減少金屬摩擦副表面間的直接接觸，大大延長其使用壽命;轉移膜中主要含有較多的石墨、少量聚四氟乙烯、 moo 。
  4. Based on the simulating results of simply - supported box girders ( 39. 1m ) and continuous box girders ( 2 x 40m ), the paper emphatically analyzes the full mechanical characteristics of psbget and the bend failure states of the right section. the influence of different areas and eccentricities of external tendons on ultimate bearing capacity and ductility is studied in detail. the differences of ultimate bearing capacity and the mechanical characteristics between the se

    Lin簡支箱梁和2x40m連續箱梁為例，本文較全面地分析了預制節段拼裝體外預應力混凝土箱梁全過程受力特性和正截面彎曲破壞形態；研究了不同預應力配筋面積和預應力筋重心高度對預制節段拼裝體外預應力簡支梁極限承載力和延性的影響，以及體外預應力節段簡支梁與體外預應力、體內有粘結預應力整體簡支梁極限承載力和受力特性的差異。
  5. Track 8 “ earthly fireworks ” was yet another song specifically composed with the singer in mind, complete with wistful and picturesque lyrics such as " wind keeps its silence, leaves fall down without a sound ", delivered again with that poetic melancholy only jeffrey could embody so well

    第8首「人間煙火」是另一首專門為陳汝佳而作的歌曲，配上感性而極富畫面感的歌詞，如「風沉默不說，樹葉無聲的墜落」 ，再次透過那種陳汝佳所特有的詩意的憂郁展現出來。
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