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阅读在语文教学中是十分重要的环节。阅读教学是教师、学生、文本之间对话的过程,同时也是学生的个性化行为,不应以教师的分析代替学生的阅读实践。因此,在小学语文阅读教学中,要突出学生的主体地位;重视朗读在阅读教学中的作用;注重激发学生的阅读思维;着力培养学生的阅读思考能力。 相似文献
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唐洪涛 《中国科教创新导刊》2013,(29):180-180
因应当前我国制造业企业转型期自动化改造的需要,探讨了技工院校工业机器人专业以校企深层合作为核心的人才培养模式的初步实施方案与愿景。 相似文献
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Plate packages are effective and promising appa-ratus for the separation of droplets from non-homoge-neous mixed systems of liquid-liquid dispersion inchemical unit operation for their features of compactconfiguration, low equipment cost and high efficien-cy[1]. The theories of plate separators were proposedand a lot of experimental researches were carried outin 1960s. Walteret alproved that in contrast to tradi-tional gravity settlers, plate packages are successfullyused to improve the separa… 相似文献
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Mechanism of Breakdown in Laminar-Turbulent Transition of Incompressible Boundary Layer on a Flat Plate 总被引：2，自引：0，他引：2
Temporal mode direct numerical simulation was done for the process of laminar-turbulent transition in an incompressible boundary layer on a flat plate. The analysis of the results showed that during the breakdown process of laminar-turbulent transition, the modification of the mean flow profile by the disturbances led to a remarkable change in its stability characteristics, manifested in the significant enlargement of the linear unstable zone and the maximum amplification rate, and led to that many more disturbances were excited and enhanced rapidly, correspondingly the turbulent energy also increased rapidly, and the mean flow profiles evolved swiftly from laminar to turbulent. It was also found that if the oblique waves in the initial disturbances did not form symmetrical pairs, the subsequent span-wise mean velocities would, in general, be nonzero due to nonlinear interaction, which would have a great effect on the stability characteristics and also implied that the turbulence obtained by direct numerical simulation might not be fully a random process. 相似文献
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本文主要探讨了最短路径问题（Shortest Path problem）的现实意义,通过C语言程序设计,寻求一种操作简易的解决最短路径问题的人机界面,能帮助解决诸如最优交通旅游路线的选择、电缆管道铺设、物流配送等应用领域的最短路径问题。 相似文献
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The trajectory model of dispersed phase drops and the model of basic flow for drop motion between two inclined parallel plates are derived with the optimized calculation. The analytical results of direct numerical simulation indicate that the basic flow plays an important role in the drop coalescence on liquid-liquid interface. In the stratified two-phase flow field, the smaller droplets are difficult to drain the thin continuous film between the approaching droplets and bulk interfaces and eventually immerse into the trickling film to yield coalescence. They almost attain the velocity of their local surroundings. Moreover, the basic flow exerts a dominant influence on the motion of smaller droplet. The smaller droplets are easily entrained by the basic flow. On the contrary, the larger drop presents advantageous characteristics of coalescence due to its high velocity. The range of 0.3 mm δR≤ 0.75 mm is the advantageous drop coalescence condition since the rapidly varied velocity and its first derivative theoretically cause the forces acting on a drop to become imbalanced. On the other hand, the thin layer of the continuous phase drained from the interval between the drops and trickling film should not be neglected in the calculation of shearing force since it is important for drop rotation. The drop rotation is an indispensable factor in coalescence. 相似文献
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膨胀土是含有丰富的水性矿物质,是一种高塑性粘质土。它具有明显的吸水膨胀和失水收缩功能。在各种建筑物施工过程中容易出现裂缝、位移和开裂的现象。文章结合膨胀土的特性。介绍膨胀土地区路堑开挖、路堤填筑以及边坡防护加固的施工技术措施。旨在为膨胀土地区铁路路基的施工提供借鉴。 相似文献
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针对Photoshop在网页制作中的运用分析,首先从Photoshop在网页制作中的运用的优势入手,对Photoshop在网页制作中的运用进行有效评价,主要内容有:Photoshop在网页图像制作中的运用、Photoshop在WEB页面设计中的运用、Photoshop在网页文底处理中的运用。 相似文献
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案例教学法在计算机教学中的运用 总被引：2，自引：0，他引：2
本文主要论述案例教学法的起源、内涵,在计算机教学中运用案例教学法的优势,案例教学法的设计和实施. 相似文献