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|  | | 为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。 | |
Experiments [1, 2] have revealed a transition accompanied by an appreciable enhancement of pulsations whose period is twice that of the driving vibrating tape.
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Results are given of experimental investigations of heat transfer under conditions of forced convection of highly subcooled water in a smooth pipe and with an internal twisted tape under asymmetric heating.
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The technique for measuring distortions is described, and the results of measurements are presented for several films cut from different sections of a standard piece of double-sided tape with a length of ~7 m and a useable width of ~20 cm.
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The standard plastic base of the tape under investigation is 190 μm thick; ~50-μm-thick layers of diluted PX3 emulsion-gel are applied to its opposite sides.
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The trigger system of the detector and the conditions for recording "charged" and "neutral" events on a magnetic tape are described.
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| | In this paper, the tape-crystal presented in PTFE which infIuences PTFE'S properties is described by microscopic structure study, Under stressing or heating, the tape-crystal woule be gradually changed in topography, especially under a longtime-thermal aging, a great amount of single crystals and a new type crystal grown in sample (c) bulk were separated. In accordance with the analysis for these crystals it is assumed that the decreasing of PTFE'S mechanical strength after aging is related to t... | | 本文以实验研究,阐明了聚四氟乙烯内部存在带状晶体及其对材料性能产生的影响。在受力及受热时,带晶会产生变化,特别是在长期热老化下的某些聚四氟乙烯本体中,可以生长出大量单晶及新晶体,经分离並加以研究后,认为材料老化后力学性能下降与此有关。文中对聚四氟乙烯粒子形态与加工性能间的关系也提出了一些新的看法。以切片法及超薄切片法为主的高聚物剖析方法,也将为其他类似工作提供一定参考。 | | 文摘来源 | | The manufacture process principles of heat-shrinking properties and application of polyethylene heat shrinking tape with chemical cross-linking are in this article. The chemical cross-linking polyethylene is made with the silane hydrolyzate technology, that is, the silane graft polyethylene is extruded from common extruder and through hydrolyzating cross-linking polyethylene is formed. Utilizing its properties of deforming under forced condition and restoring oringinal shape after reliving stress, th... | | 本文叙述了化学交联聚乙烯热收缩补口带的制作工艺、热收缩原理、性能及应用情况。化学交联聚乙烯系硅烷水解交联技术,用普遍的挤出设备制取硅烷接枝聚乙烯,再经水解而得到交联聚乙烯。热收缩补口带是利用其受力变形、解除应力即恢复其原形的性能制作的,具有成型加工好,设备投资小,不需特殊设备的优点。 | | 文摘来源 | | This paper introduces the properties, the solvent selection and the spraying technology of acrylic coating for TV and tape recorder plastic cases, and the stress reducing methods of the plastic cases as well as the coating defects of plastic cases and their remedial measures. | | 介绍喷涂电视机,收录机塑料壳所用丙烯酸涂料的性能,溶剂的选用,塑料壳基材消除应力措施和喷涂工艺条件,以及塑料壳涂层的缺陷和补救办法。 | | 文摘来源 | |   | | << 更多相关文摘 |
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