擠出機英語翻譯。。。在線等。高分懸賞
-
Simplified Flow Theory for Screw Extruders The flow behavior of a viscous liquid in the channel of an extruder screw is shown to be similar to the flow behavior of viscous liquids between infinite parallel plates, one of which is station... Simplified Flow Theory for Screw Extruders The flow behavior of a viscous liquid in the channel of an extruder screw is shown to be similar to the flow behavior of viscous liquids between infinite parallel plates, one of which is stationary and the other moving. Assuming Newtonian behavior of the liquid, a differential equation was derived which relates the rate of extrusion and the die pressure to the screw and die geometry and to the operating variables. Integrated flow equations are given for the special case in which the viscosity of the liquid is constant throughout the screw channel (isothermal extrusion). Equations are also given for the case in which the dimensions of the screw channel are functions of their position along the length of the screw. IN THE preceding paper ( 1 )o f this symposium the literature pertaining to the problem of viscous flow in extruders was reviewed. In this paper the development of simplified but more useful flow equations is presented. The synibols and nomenclature used in this paper are defined in the preceding paper (1). The flow mechanism of the viscous liquid in the helical channel of the screw can be better understood if one imagines that the channel be unrolled and laid out on a flat surface. Figure 1 shows this concept of the screw channel. If the lower plate, representing the screw surface, is held stationary and the upper plate, representing the barrel surface, is moved in the direction of the arrow, the relative motions will be the same as those existing in an extruder where the barrel is stationary and the screw rotates. Assuming that the liquid wets both surfaces, the motion of the barrel drags the viscous liquid along with it, while the stationary plate exerts an equal and opposite drag. The velocity of the liquid, relative to the screw, is a maximum at the barrel surface and zero at the screw surface. There is also a directional factor involved, since the channel is inclined at angle p to the direction of motion. Therefore, in computing the flow rate in the channel we break up the velocity into two components: one of these acts directly down the channel, and the other acts at right angles to it. We call the component which acts down the channel drag velocity, and the component which acts at right angles to this transverse velocity. At the end of the channel there is generally a die or some other restriction to flow. This sets up a pressure gradient down the channel causing a flow in the reverse direction to the drag flon. There is one other flow that must be considered. Generally the screw does not fit perfectly inside the barrel. In other words, there is a clearance between the top of the screw threads and the barrel surface. 展開
全部評論(2條)
-
- 沒淚怎哭 2009-03-30 00:00:00
- 簡化流理論為螺桿擠壓 流動行為的粘稠液體在英吉利海峽的一個雙螺桿擠出機螺桿中顯示 類似的粘性液體的流動性能之間的平行板、無限 是靜止不動的和其他運動。假設牛頓的行為 液體,一個微分方程推導雙螺桿擠出機的速度的關系及 死的壓力而死的幾何和螺絲的操作變量。綜合 給出了公式的特殊情況的粘度液體是不變的 在雙螺桿擠出機螺桿通道(溫熱。給出了方程 在對案例的尺寸通道功能的螺釘位置 沿長度的螺絲。
-
贊(12)
回復(0)
-
- 偶是班國睿 2009-03-30 00:00:00
- 簡體流理論的螺桿擠出機 流動行為的粘稠液體在渠道的擠出機螺桿證明 類似的流動行為的粘性液體無限平行板之間,其中一 這是固定和其他移動。假設牛頓行為 液體,微分方程推導出涉及的比率擠壓和 模具壓力的螺絲和模具幾何和經(jīng)營變數(shù)。綜合 潮流方程給出的特殊情況下,粘度的液體不斷 整個螺桿收藏(等溫擠壓) 。方程給出 對案件中的尺寸螺釘通道職能其立場 沿長度的螺釘。 在前面的文件( 1 )本次研討會的文學有關問題的粘性流動的擠出機進行了審查。 本文的發(fā)展,但更簡化 有用的流動方程是。該synibols和術語 使用本文中定義前文件( 1 ) 。 流動機制的粘稠液體在螺旋通道 螺旋可以得到更好的理解,如果一個想象的 通道被打開,并提出了在平面上。圖1 表明這一概念的螺旋通道。如果低板, 代表螺桿表面上看,是平穩(wěn)和舉行上 板,相當于每桶表面上看,是移動的方向 箭頭,相對動議將是相同的現(xiàn)有 在擠出機是在每桶螺釘固定和旋轉。 假設液體胎都表面,議案的 每桶拖累的粘稠液體隨著它,而平穩(wěn) 板施加一個平等和相反的阻力。的速度 液體,相對的螺絲,是Z高的每桶表面 零在螺桿表面。還有一個方向的因素 參與,因為渠道是傾斜角p來時的方向 的動議。因此,在計算流量的頻道 我們打破了速度分為兩個部分:一個是這些行徑 下跌的直接通道,和其他行為成直角它。 我們呼吁這些行為的組成部分渠道拖累下跌速度, 和部分行為成直角這種橫向 速度。結束時的渠道通常是有死 或一些其他限制流動。這建立了一個壓力梯度 下降通道造成流動的相反方向 拖曳娜弗龍。有一個其他 流動是必須加以考慮。一般來說,螺釘不適合 完全內(nèi)桶。換句話說,是一個關 在高手之間的螺紋和桶表面。
-
贊(8)
回復(0)
熱門問答
- 擠出機英語翻譯。。。在線等。高分懸賞
- Simplified Flow Theory for Screw Extruders The flow behavior of a viscous liquid in the channel of an extruder screw is shown to be similar to the flow behavior of viscous liquids between infinite parallel plates, one of which is station... Simplified Flow Theory for Screw Extruders The flow behavior of a viscous liquid in the channel of an extruder screw is shown to be similar to the flow behavior of viscous liquids between infinite parallel plates, one of which is stationary and the other moving. Assuming Newtonian behavior of the liquid, a differential equation was derived which relates the rate of extrusion and the die pressure to the screw and die geometry and to the operating variables. Integrated flow equations are given for the special case in which the viscosity of the liquid is constant throughout the screw channel (isothermal extrusion). Equations are also given for the case in which the dimensions of the screw channel are functions of their position along the length of the screw. IN THE preceding paper ( 1 )o f this symposium the literature pertaining to the problem of viscous flow in extruders was reviewed. In this paper the development of simplified but more useful flow equations is presented. The synibols and nomenclature used in this paper are defined in the preceding paper (1). The flow mechanism of the viscous liquid in the helical channel of the screw can be better understood if one imagines that the channel be unrolled and laid out on a flat surface. Figure 1 shows this concept of the screw channel. If the lower plate, representing the screw surface, is held stationary and the upper plate, representing the barrel surface, is moved in the direction of the arrow, the relative motions will be the same as those existing in an extruder where the barrel is stationary and the screw rotates. Assuming that the liquid wets both surfaces, the motion of the barrel drags the viscous liquid along with it, while the stationary plate exerts an equal and opposite drag. The velocity of the liquid, relative to the screw, is a maximum at the barrel surface and zero at the screw surface. There is also a directional factor involved, since the channel is inclined at angle p to the direction of motion. Therefore, in computing the flow rate in the channel we break up the velocity into two components: one of these acts directly down the channel, and the other acts at right angles to it. We call the component which acts down the channel drag velocity, and the component which acts at right angles to this transverse velocity. At the end of the channel there is generally a die or some other restriction to flow. This sets up a pressure gradient down the channel causing a flow in the reverse direction to the drag flon. There is one other flow that must be considered. Generally the screw does not fit perfectly inside the barrel. In other words, there is a clearance between the top of the screw threads and the barrel surface. 展開
- 高分懸賞,會人工英語翻譯的進~~~
- AnalyticalMethodsofVolatileAnalysisManyanalyticalmethodshavebeenusedforthesamplingandisolationofvolatilecompoundsgeneratedduringlipidoxidation.Sampling,usingmethodssuchas... Analytical Methods of Volatile Analysis Many analytical methods have been used for the sampling and isolation of volatile compounds generated during lipid oxidation. Sampling, using methods such as extraction, headspace analysis, and solid-phase microextraction (SPME), offers a means to collect and often pre-concentrate volatiles from samples. Isolation allows the separation of the extracted volatiles and is often accomplished using gas chromatography (GC) or high-pressure liquid chroma- tography (HPLC). Aromatic compounds are produced in low con- centrations at the onset of lipid oxidation, thereby requiring a method that not only isolates the compounds, but concentrates them. In addition, food provides a complex matrix from which to extract the compounds. Several studies have addressed the bind- ing of lipid oxidation products to proteins (O’Keefe and others 1991; Gutheil and others 1992). These bound compounds need to be liberated before the oxidation products can be accurately quantified. Sample preparation can complicate the assessment of lipid oxidative status as a number of these lipid oxidation prod- ucts are thermally generated. Care must be taken to extract the compounds present in the sample while not generating additional oxidation products or allowing the volatile compounds to de- grade during the extraction process. The most common procedures reported in the literature for the determination of lipid oxidation products from muscle foods are GC methods. In this review, sampling methodologies of distillation and solvent extraction, and isolation methods associated with GC and HPLC analyses will be discussed. Within those gas chromato- graphic methodologies, static HS, dynamic purge-and-trap HS, and solid-phase microextraction (SPME) will be addressed. A summary of the different isolation methods is presented in Table 1. 只要翻譯的通順即可。雖然長了點,可是80分還是值得的吧 展開
- 英語翻譯,急急??!在線等
- 光譜分析儀,拉力試驗機,動平衡試驗機,金相顯微鏡,碳硫分析儀,沖天爐,地砂線,精密數(shù)控車床,精密數(shù)控磨床。翻譯成英語啊。在線等。非常急。非常感謝
- 有關大學化學的英語翻譯~進來看看。高分懸賞
- 3.1敵草隆吸附等溫線 圖 2a-c 展示了在沒有控制酸堿度的情況下,活性碳在不同溫度時對敵草隆的吸附量。從各圖可見,它們在研究所涉及的溫度范圍內(nèi)都很完整,覆蓋至大約 55 mmol L-1的范圍。在整個受測試的濃度范圍內(nèi),敵草隆的吸附量都隨著溫度顯著增加,因此... 3.1敵草隆吸附等溫線 圖 2a-c 展示了在沒有控制酸堿度的情況下,活性碳在不同溫度時對敵草隆的吸附量。從各圖可見,它們在研究所涉及的溫度范圍內(nèi)都很完整,覆蓋至大約 55 mmol L-1的范圍。在整個受測試的濃度范圍內(nèi),敵草隆的吸附量都隨著溫度顯著增加,因此,根據(jù)觀察所得,溫度對敵草隆吸附能力的影響,與Z常見的吸附趨勢不同。這種明顯的吸熱表現(xiàn),是由于溶液中的敵草隆份子在溫度增加時更容易出現(xiàn)去溶劑化的情形,因而令敵草隆份子的平面性和擴散率都有所增加[10,11,27]。在diyi次進行時,圖 2a 的均衡等溫線屬于 L 類(更仔細而言則屬 Giles 分類法中的 L-3 分類 [12]),因而顯示出,敵草隆較低的水溶度和多層吸附現(xiàn)象令它有較好的吸附能力。該條等溫線diyi部份所呈現(xiàn)的坡度遞減,并在高處轉平的情形,是大部份稀薄溶液的常見吸附情形。這個模式代表可供吸附的表面被逐漸占用。雖然等溫線在高處轉平所展現(xiàn)的飽和情況被理解為是單層吸附完成的結果,卻不一定能顯示出一層排列緊密的吸附物本身的序列情況。該層吸附物也可以包含有溶劑的份子和吸附物的份子群,而且,它們除了吸附在原有表面的可吸附位置之外,也可以形成一定程度的多層吸附物,或者填塞在孔洞中。當?shù)葴鼐€在高處完全轉平的時候,溶解物的濃度會隨著溫度而減少,即在15攝氏度和45攝氏度時,濃度分別為約45mmol L-1至約 30 mmol L-1。在過去的論文中,F(xiàn)ontecha-Cámara 等人 [10] 曾經(jīng)報導:敵草隆在酸堿度為 7 時,對活性碳纖維和布料的吸附量呈現(xiàn) L 類等溫線;而 Bouras 等人 [9] 則報導敵草隆在酸堿度為 6 時,對于表面活性經(jīng)過修改的柱狀粘土的吸附量呈現(xiàn)S類等溫線。因此,多層吸附物的形成,似乎是受到吸附面的性質(zhì)影響,而另一項影響因素則是酸堿度對已吸附的溶解物和尚待吸附的溶解物之間互動作用的影響。 展開
- 高分懸賞 買個筆記本電腦
- 我想買個筆記本 主要選擇 戴兒 HP 聯(lián)想 1.價格在3000-5000 2.能玩游戲的 3.性能要好 散熱啊什么的 4.售后服務好點 別買了就當沒一回事了 買的時候么態(tài)度很好的 5.我根本不懂筆記本的 大家Z好詳細介紹 害人的 千萬別來
- 加速度傳感器輸出(急,在線等,給高分)
- 遠東測振(原北京測振儀器廠)的YDI-37內(nèi)裝電路加速度計的輸出有人了解嗎?網(wǎng)址是這個:http://www.vmif.com/product7.html 與技術支持交流得到的是:輸出為交流電壓信號,正負5V范圍。 關鍵是不理解這個交流電壓信號輸出,以前用到的都是直流輸出的。請知情... 遠東測振(原北京測振儀器廠)的YDI-37內(nèi)裝電路加速度計的輸出有人了解嗎?網(wǎng)址是這個:http://www.vmif.com/product7.html 與技術支持交流得到的是:輸出為交流電壓信號,正負5V范圍。 關鍵是不理解這個交流電壓信號輸出,以前用到的都是直流輸出的。請知情人幫忙解答一下。謝謝了。在線等! 展開
- 50分懸賞··動物細胞培養(yǎng)與微生物細胞培養(yǎng)的區(qū)別....在線等·
- 目:動物細胞培養(yǎng)與微生物細胞培養(yǎng)的區(qū)別·答案要具體點·要列出一二三四五條來·我不要ctrl+v來的答案·... 目:動物細胞培養(yǎng)與微生物細胞培養(yǎng)的區(qū)別· 答案要具體點·要列出一二三四五條來· 我不要ctrl+v來的答案· 展開
- 高分懸賞,關于各種建筑的結構
- 我需要下列物體的結構類型,連接方式,受力特點??! 柵欄,圓形陶瓷裝飾品,冰山,高層建筑的穹頂,玻璃鋼過蓋,竹排,汽車外殼,人的頭蓋骨,古羅馬斗獸場。 在線等,十萬火急??!1
- 紙箱盒子等外面覆合的薄膜原料是什么? 高懸賞!急用!在線等!
- 高分求 光學薄膜 物理 專業(yè)英語翻譯 有追加
- 翻譯 論文摘要 給出了部分關鍵詞 希望對你您有所幫助 也希望您對我有所幫助 呵呵 部分關鍵字: 帶通濾光片 近紅外 膜系設計 短波通 ZX波長 透射率 key words :pass-band optical filter; near infrared; film system design;short wave pass;centr... 翻譯 論文摘要 給出了部分關鍵詞 希望對你您有所幫助 也希望您對我有所幫助 呵呵 部分關鍵字: 帶通濾光片 近紅外 膜系設計 短波通 ZX波長 透射率 key words :pass-band optical filter; near infrared; film system design;short wave pass;central wavelength ;transmittance 翻譯正文如下: 摘要:隨著礦難的頻頻發(fā)生,瓦斯探測器的靈敏度越來越受到人們重視。 本文中的紅外吸收型甲烷檢測儀便具有選擇性強,靈敏度高等優(yōu)點。其中近紅外濾光片為該裝置的核心部件。 本文介紹了利用特征矩陣法進行薄膜設計的制作方法。 采用Si和SiO2作為薄膜材料,利用ZX波長不同的長波通和短波通濾光片對接,以完成近紅外波段的帶通濾光片設計。 該濾光片ZX波長為1651nm,并在該波長附近的透射率可達到95%。 能翻多少翻多少 一句也行呀 呵呵 google的就免了,翻得好有追加,人格擔保~~ 展開
- 酶的探索歷程??!超高分懸賞!來啊!
- 我需要知道在探索酶的過程中,有哪些科學家(包括國籍,他是什么學家,如物理學家或者化學家等等,時間,哪個世紀)做出了貢獻,做出了什么貢獻,(如果有記載他是怎么做的實驗那跟號... 我需要知道在探索酶的過程中,有哪些科學家(包括國籍,他是什么學家,如物理學家或者化學家等等,時間,哪個世紀)做出了貢獻,做出了什么貢獻,(如果有記載他是怎么做的實驗那跟號)。 要全,不要只挑以前的或只挑現(xiàn)在的,我給你那么多分就是要你仔細的找,不要隨便糊弄我??! 展開
- 日勝(rs-4500)怎么過濾水怎么抽水,高分求,在線等。
- 水是昨天剛剛換的,今天就有點臟了,求解還有怎么抽水。... 水是昨天剛剛換的,今天就有點臟了,求解 還有怎么抽水。 展開
- 大物邁克爾遜干涉儀的問題~高分懸賞!
- 用邁克耳孫干涉儀作干涉實驗,設入射光的波長為 λ.在轉動邁克耳孫干涉儀的反射鏡M2過程中,在總的干涉區(qū)域?qū)挾萀內(nèi),觀測到完整的干涉條紋數(shù)從N1開始逐漸減少,而后突變?yōu)橥膱A環(huán)的等傾干涉條紋.若繼續(xù)轉動M2又會看到由疏變密的直線干涉條紋.直到在寬度 ... 用邁克耳孫干涉儀作干涉實驗,設入射光的波長為 λ.在轉動邁克耳孫干涉儀的反射鏡M2過程中,在總的干涉區(qū)域?qū)挾萀內(nèi),觀測到完整的干涉條紋數(shù)從N1開始逐漸減少,而后突變?yōu)橥膱A環(huán)的等傾干涉條紋.若繼續(xù)轉動M2又會看到由疏變密的直線干涉條紋.直到在寬度 L內(nèi)有N2條完整的干涉條紋為止.在此過程中M2轉過的角度Δθ是? 求詳細解答~ 展開
- 高分懸賞基于Labview的虛擬傳遞函數(shù)測試儀設計
- 設計一個傳遞函數(shù)虛擬測試儀,學習系統(tǒng)傳遞函數(shù)、轉折頻率的測量方法,分析傳遞函數(shù)譜線圖的影響因素等。要求:它的工作狀態(tài)有‘實測’和‘仿真’兩部分。仿真用來分析一階RC低通濾波... 設計一個傳遞函數(shù)虛擬測試儀,學習系統(tǒng)傳遞函數(shù)、轉折頻率的測量方法,分析傳遞函數(shù)譜線圖的影響因素等。 要求:它的工作狀態(tài)有‘實測’和‘仿真’兩部分。仿真用來分析一階RC低通濾波器的傳遞函數(shù),輸入的方波信號與被分析的一階RC濾波器均由軟件生成;實測功能則是通過數(shù)據(jù)采集卡采集信號發(fā)生器產(chǎn)生的方波信號作為輸入信號來測定一個實際系統(tǒng)/環(huán)節(jié) 。 QQ:8705573 可追加分數(shù),分數(shù)不是問題。會的話加我QQ! 展開
- 急!?。。?!高分懸賞(100分,還可加)英文論文翻譯~
- 標題:TwoRF/MicrowaveSoftwareProgramsUsedinTandemStreamlinetheDesignofPowerThisarticledescribesaprocedureforthedesignanddevelopmentofpoweramplifiersusingharmonic-balanced... 標題:Two RF/Microwave Software Programs Used in Tandem Streamline the Design of Power This article describes a procedure for the design and development of power amplifiers using harmonic-balanced software in tandem with impedance matching network synthesis software. For this purpose a particular design problem will be discussed. 這是文章的開頭部分,還有結尾部分,如果這個文章覺得可以翻譯的話,留下郵箱或qq號,我發(fā)文章過去,翻譯完滿意就給分,絕不含糊:) 展開
- 請近來幫忙分析下尿常規(guī) 高分懸賞啊 ~~~
- 前段時間我檢查了尿常規(guī) 有潛血 蛋白尿 幫忙看看 08年1月12號diyi次檢查結果 尿沉淀 紅細胞72.30 參考值 0-26 結晶標記+ 尿干結果 蛋白尿+1 隱血+3 經(jīng)過ZL 2月1號檢查結果 紅細胞41.40 參考0-26 細菌4366.30 參考0-4000 隱血+- 大哥幫忙分... 前段時間我檢查了尿常規(guī) 有潛血 蛋白尿 幫忙看看 08年1月12號diyi次檢查結果 尿沉淀 紅細胞72.30 參考值 0-26 結晶標記+ 尿干結果 蛋白尿+1 隱血+3 經(jīng)過ZL 2月1號檢查結果 紅細胞41.40 參考0-26 細菌4366.30 參考0-4000 隱血+- 大哥幫忙分析下啊 紅細胞ZL中間正常過 現(xiàn)在又高了 展開
- 英文翻譯,在線等!!!
- AnemailwithanAccountActivationLinkhasbeensenttotheemailaddressyou'veprovided.Ifyoucan'tfindtheemailinyourinbox,pleasecheckyour"Spam"folderassomeemailfilterswillmistakenly... An email with an Account Activation Link has been sent to the email address you've provided. If you can't find the email in your inbox, please check your "Spam" folder as some email filters will mistakenly redirect this automatically generated message to that folder. Click on the link in the email to automatically activate your account and you'll be on your way! 展開
- 邁克爾遜干涉儀測空氣折射率公式 急?。?!高分懸賞
- 就是里面 壓強,折射率,光程差變化等等的關系
4月突出貢獻榜
推薦主頁
最新話題





參與評論
登錄后參與評論