挤出机英语翻译。。。在线等。高分悬赏

cf唰枪 2009-03-29 12:37:44 553 浏览

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. 展开

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没泪怎哭 2009-03-30 00:00:00

简化流理论为螺杆挤压流动行为的粘稠液体在英吉利海峡的一个双螺杆挤出机螺杆中显示类似的粘性液体的流动性能之间的平行板、无限是静止不动的和其他运动。假设牛顿的行为液体，一个微分方程推导双螺杆挤出机的速度的关系及死的压力而死的几何和螺丝的操作变量。综合给出了公式的特殊情况的粘度液体是不变的在双螺杆挤出机螺杆通道(温热。给出了方程在对案例的尺寸通道功能的螺钉位置沿长度的螺丝。

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偶是班国睿 2009-03-30 00:00:00

简体流理论的螺杆挤出机流动行为的粘稠液体在渠道的挤出机螺杆证明类似的流动行为的粘性液体无限平行板之间，其中一这是固定和其他移动。假设牛顿行为液体，微分方程推导出涉及的比率挤压和模具压力的螺丝和模具几何和经营变数。综合潮流方程给出的特殊情况下，粘度的液体不断整个螺杆收藏（等温挤压）。方程给出对案件中的尺寸螺钉通道职能其立场沿长度的螺钉。在前面的文件（ 1 ）本次研讨会的文学有关问题的粘性流动的挤出机进行了审查。本文的发展，但更简化有用的流动方程是。该synibols和术语使用本文中定义前文件（ 1 ）。流动机制的粘稠液体在螺旋通道螺旋可以得到更好的理解，如果一个想象的通道被打开，并提出了在平面上。图1 表明这一概念的螺旋通道。如果低板，代表螺杆表面上看，是平稳和举行上板，相当于每桶表面上看，是移动的方向箭头，相对动议将是相同的现有在挤出机是在每桶螺钉固定和旋转。假设液体胎都表面，议案的每桶拖累的粘稠液体随着它，而平稳板施加一个平等和相反的阻力。的速度液体，相对的螺丝，是Z高的每桶表面零在螺杆表面。还有一个方向的因素参与，因为渠道是倾斜角p来时的方向的动议。因此，在计算流量的频道我们打破了速度分为两个部分：一个是这些行径下跌的直接通道，和其他行为成直角它。我们呼吁这些行为的组成部分渠道拖累下跌速度，和部分行为成直角这种横向速度。结束时的渠道通常是有死或一些其他限制流动。这建立了一个压力梯度下降通道造成流动的相反方向拖曳娜弗龙。有一个其他流动是必须加以考虑。一般来说，螺钉不适合完全内桶。换句话说，是一个关在高手之间的螺纹和桶表面。

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挤出机英语翻译。。。在线等。高分悬赏: 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. 展开

高分悬赏，会人工英语翻译的进~~~: 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. 只要翻译的通顺即可。虽然长了点，可是80分还是值得的吧展开

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高分求光学薄膜物理专业英语翻译有追加: 翻译论文摘要给出了部分关键词希望对你您有所帮助也希望您对我有所帮助呵呵部分关键字：带通滤光片近红外膜系设计短波通 ZX波长透射率 key words :pass-band optical filter； near infrared; film system design;short wave pass；centr... 翻译论文摘要给出了部分关键词希望对你您有所帮助也希望您对我有所帮助呵呵部分关键字：带通滤光片近红外膜系设计短波通 ZX波长透射率 key words :pass-band optical filter； near infrared; film system design;short wave pass；central wavelength ；transmittance 翻译正文如下：摘要：随着矿难的频频发生，瓦斯探测器的灵敏度越来越受到人们重视。本文中的红外吸收型甲烷检测仪便具有选择性强，灵敏度高等优点。其中近红外滤光片为该装置的核心部件。本文介绍了利用特征矩阵法进行薄膜设计的制作方法。采用Si和SiO2作为薄膜材料，利用ZX波长不同的长波通和短波通滤光片对接，以完成近红外波段的带通滤光片设计。该滤光片ZX波长为1651nm，并在该波长附近的透射率可达到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，人格担保~~ 展开

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急！！！！！高分悬赏（100分，还可加）英文论文翻译~: 标题：TwoRF/MicrowaveSoftwareProgramsUsedinTandemStreamlinetheDesignofPowerThisarticledescribesaprocedureforthedesignanddevelopmentofpoweramplifiersusingharmonic-balanced... 标题：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. 这是文章的开头部分，还有结尾部分，如果这个文章觉得可以翻译的话，留下邮箱或qq号，我发文章过去，翻译完满意就给分，绝不含糊：）展开

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大物迈克尔逊干涉仪的问题~高分悬赏！: 用迈克耳孙干涉仪作干涉实验，设入射光的波长为 λ．在转动迈克耳孙干涉仪的反射镜M2过程中，在总的干涉区域宽度L内，观测到完整的干涉条纹数从N1开始逐渐减少，而后突变为同心圆环的等倾干涉条纹．若继续转动M2又会看到由疏变密的直线干涉条纹．直到在宽度 ... 用迈克耳孙干涉仪作干涉实验，设入射光的波长为 λ．在转动迈克耳孙干涉仪的反射镜M2过程中，在总的干涉区域宽度L内，观测到完整的干涉条纹数从N1开始逐渐减少，而后突变为同心圆环的等倾干涉条纹．若继续转动M2又会看到由疏变密的直线干涉条纹．直到在宽度 L内有N2条完整的干涉条纹为止．在此过程中M2转过的角度Δθ是？求详细解答~ 展开

英文翻译，在线等!!!: 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! 展开

毕业论文《基于DSP的余弦信号发生器》急求！高分悬赏！！！！！！！！: 希望按照毕业论文的格式，必须有程序可以运行出来，好的话可以出更高分悬赏！... 希望按照毕业论文的格式，必须有程序可以运行出来，好的话可以出更高分悬赏！展开

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