【正文】 王延耀，張巖，尚書旗，等．氣爆式花生脫殼性能的試驗研究[J]．農業(yè)工程學報，1998，14(1)[7] 王智才．我國農機市場需求及發(fā)展前景[J]．農機質量與監(jiān)督，2002，(5)[8] 石一兵 食品機械與設備[M] 北京：中國商業(yè)出版社 [9] 肖旭霖 食品機械與設備[M] 北京：科學出版社，2006[10] 中國標準出版社第一編輯室 中國食品工業(yè)標準匯編[M] 北京：中國標準出版社，2004[11] 唐增寶，何永然，劉安俊 機械設計課程設計[M] 武漢：華中理工大學出版社 [12] 濮良貴，紀名剛 機械設計[M] 北京：高等教育出版社，2001[13] 成大先 [M] 北京：化學工業(yè)出版社 致謝本文是在周善炳老師的精心指導和關懷下完成的，周老師淵博的學識、嚴謹的治學態(tài)度、精益求精的工作作風、高度的責任心對我產生了深深的震撼。 電子光譜。不少年后, 拉格朗日發(fā)現了五平衡點的存在, 今后大家都稱為拉格朗日點。 它是確切, 假設, 子彈頭隨后而來一條直線彈道沒有道理在電子或正子原子碰撞的理論描述。 但是, 動量和能源節(jié)約的情況減少這個數字 到五。 因而, 它通常是必要減少可變物的數量在橫剖面。θ2), 以便使問題的依賴性降低到三或二獨立可變物, 各自地。 終于, 有尖頂和anticusp 在零速度在電子和正子動量分布, 各自地。 履行這個宗旨它是必要的有一種充分的量子機械治療能同時應付電離碰撞由重和輕的子彈頭的沖擊是因此相等地可適用的 例如 對離子原子或正子原子碰撞。為了是一致的與動力學的我們充分的治療, 它是必要描述最終狀態(tài)Wf 通過考慮所有互作用在同樣立足處的wavefunction 。 我們選擇作為二個獨立參量散發(fā)的電子動量組分, 平行和垂線對正子子彈頭的行動的最初的方向。 因為ECC 尖頂是一個推測橫跨捕獲電離極限入高度激動的一定的狀態(tài), 這個同樣作用必須是存在在正子原子碰撞。Kover 和Laricchia 測量了在1998 dr/dEedXkdXK 橫剖面在一個collinear 情況在零的程度, 為H2 的電離分子由100 keV 正子沖擊[ 10 ] 。 每個這些過程包括正子電子二進制碰撞, 被偏折跟隨被90 輕的微粒的當中一個被重的中堅力量。 想法是, 電子能從離子原子碰撞涌現由在在子彈頭和殘余的目標離子潛力的備鞍點。 圖3 和圖4 精確地設置早先條件在任何能量和角度三個微粒符合的那些點。 終于, 有被解釋對象由于所謂的備鞍點 電離機制的極小值。 Positron impact。0 and θ1E)ΨimjZj/kj. This model was proposed by Garibotti and Miraglia [6] for ion–atom collisions, and by Brauner and Briggs six years later for positron–atom and electron–atom collisions [7]. However, in all these cases the kinematics of the problem was simplified, as discussed in the previous section, on the basis of the large asymmetry between the masses of the fragments involved. In addition, Garibotti and Miraglia neglected the matrix element of the interaction potential between the ining projectile and the target ion, and made a peaking approximation to evaluate the transition matrix element. This further approximation was removed in a paper by Berakdar et al. (1992), although they kept the mass restrictions in their ionimpact ionization analysis. 5. The electron capture to the continuum cusp Let us review some results in a collinear geometry. We choose as the two independent parameters the emitted electron momentum ponents, parallel and perpendicular to the initial direction of motion of the positron projectile. The energy of the projectile is 1keV positron impact [10]. The structure is not so sharply defined as for impact observed for heavy ions because of the convolution that accounts for the experimental window in the positron and e。VfΨf. For the Borntype initial statewhich includes the free motion of the projectile and the initial bound state Φi of the target, and the perturbation potential Vi is simply the sum of the positron–electron and positron–nucleus interactions. The transition matrix may then be deposed into two termsdepending on whether the positron interacts first with the target nucleus or the electron. In order to be consistent with our full treatment of the kinematics, it is necessary to describe the final state by means of a wavefunction that considers all the interactions on the same footing. Thus, we resort to a correlated C3 wave functionthat includes distortions for the three active interactions. The finalchannel perturbation potential for this choice of continuum wave function is [5](1)In the case of pure coulomb potentials, the distortions are given bywith νj. 4. Theoretical model The main question that we want to address in this munication is if there are some important collision properties in positron–atom collisions, that are not observable in total, single or double differential ionization cross sections, and that therefore have not yet been discovered. In order to understand the origin of these structures, we pare the corresponding cross sections with those obtained in ion–atom collisions. To fulfill this objective it is necessary to have a full quantummechanical treatment able to deal simultaneously with ionization collisions by impact of both heavy and light projectiles that is therefore equally applicable – for instance – to ion–atom or positron–atom collisions. A theory with this characteristics will allow us to study the changes of any given feature of multipledifferential crosssections when the mass relations among the fragments vary. In particular, it would allow us to study the variation when changing between the two restricted kinematical situations. The second important point is to treat all the interactions in the final state on an equal footing. As we have just explained, in ion–atom collisions, the internuclear interaction plays practically no role in the momentum distribution of the emitted electron and has therefore not been considered in the corresponding calculation. In this work, this kind of assumption has been avoided. The cross section of interest within this framework isThe transition matrix can be alternatively written in post or prior forms aswhere the perturbation potentials are defined by (H0) or a collinear motion (. Electron spectra。 你是知名的電子捕獲對連續(xù)流峰頂。 這個機制被描述在圖4. 因而, 檢查備鞍點的提案是正確的, 我們看是否我們的演算顯示與備鞍點電子生產的這個描述是一致的結構。7. 備鞍點機制  一定更難辨認。6. 托馬斯機制 現在讓我們走回到H2 的電離由1 keV 正子沖擊。 因而, 觀察這結構它是必要增加橫剖面的維度。 第一理論解釋[ 9 ] 表示, 它分流以與1 相似的方式k 。 (1992), 雖然他們保留許多制約在他們的離子沖擊電離分析。 橫剖面利益在這范圍內是轉折矩陣可能供選擇地被寫在崗位或預先的形式那里擾動潛力被定義為出生類型初始狀態(tài)哪些包括子彈頭的自由行動和最初的一定的狀態(tài)Ui 目標, 并且擾動潛力vi 簡單地是正子電子和正子中堅力量互作用的總和。4. 理論模型我們想要討論在這通信的主要問題是如果有一些重要碰撞物產在正子原子碰撞, 那不是可測的，總共, 單或雙有差別的電離橫剖面, 并且那因為未被發(fā)現。 第二個結構是土坎被設置沿圈子。0 and θ1 獨立可變物一個相似的選擇是標準的為原子電離的描述由電子沖擊, 理論上和實驗性地[ 3,4 ] 。 這略計廣泛被應用在電子或正子原子電離碰撞。 （2）對于電子和正子原子碰撞, 一個微粒(目標中堅力量) 比其它兩個原子要重的多。三體問題比二體問題更加復雜難懂, 除了一些特殊的現象，它不能被簡單的分析解決。 碰撞動力學。本次設計是對我的四年的大學生活做出的總結,同時為將來工作進行了一次適應性訓練，從中鍛煉自己解分析問題、解決問題的能力，為今后自己的研究生生活打下一個良好的基礎。具體結構見裝配圖。 箱體箱體的作用是提供給刮板一個封閉的剝殼環(huán)境，并對相關結構起到支承和定位作用。 半柵籠半柵籠在機器中的作用是讓已經被剝殼的花生與未被剝殼的花生進行分離，其分離的原理就是“小個通過，大個不過”。3．1設計前各項參數的確定3．1．1 刮板的半徑及轉速初定刮板的旋轉必須確保能將部分花生殼撞碎，當花生果與鋼質物體相對速度達到5時，可使花生殼破碎而不會破壞到花生仁，可根據此依據設計刮板的轉速與半徑。其結構如圖11所示。設計過程是從上往下，從花生的裝集開始，最上面是集料斗，集料斗下方是剝殼箱，集料斗可與剝殼箱設計為一個整體。隨著國內外高新技術的進一步發(fā)展，如何將這些高新技術更好的應用到實際生產中，也是