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Abstract: Experiments were made on a ultrasonic machining tool with work-piece adhered to ultrasonic transducer head,to machine micro-holes on hard and brittle materials such as soda glass and Si,to study the effects of tool materials，work-piece materials
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文摘:通过以WEDG放电加工手段制作微细超声加工用工具，在采用工件加振方式的微细超声加工机上对碳酸玻璃、半导体硅等硬脆材料试件进行微孔加工的实验，来探讨在某一特定加工条件下工具材料、工件材料、工件的振幅、加工静载荷、磨料悬浮液浓度、工具长度及工件尺寸等重要因素对加工速度、工具损耗率的影响，为微细超声加工技术的实用化提供参考依据。 |
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Abstract: Expound the component, the principle and the working process ofthe material attenuation measure device, give the attenuation coefficient calculation method.
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文摘:阐述了材料衰减测试系统的组成、原理及工作过程，给出了衰减系数的计算方法。 |
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Abstract: Expounding detailed professional harm during shipbuilding and mending,putting forward the countermeasures to control these.
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文摘:详细论述了船舶建造过程中及修理过程中的职业危害，提出了控制这些危害的措施。 |
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Abstract: Expounds two important problems which are that packaging has conformed to all prereguisites of a discipline and the packaging discipline has embodied every characteristics of a synthetical discipline in cross disciplinary groups.
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文摘:根据当代跨学科研究的基本理论和分析方法，阐述了关于包装已经符合一门学科的所有条件和包装学科已经体现交叉学科群中综合学科的各项特征的两个重大问题。 |
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Abstract: Facing the fact that a lot of famous enterprises have taken the strategy of large scale expansion in the latest 10 years,according to our country's practical situation,this article mainly analyses the advantages in pursuance of the strategy of e
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文摘:文章针对十年来全球许多著名企业实施大规模的膨胀战略之现象，分析了膨胀战略追求的利益，并联系我国实际情况，探讨我国企业实施膨胀战略应注意的问题，以及如何为企业实施这一战略建立良好的外部环境。 |
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Abstract: Factors influencing UASB start-up and attentions that should be payed were discussed in this paper in term of practices.Furthermore,some of effective ways of quickening the start-up were introduced.
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文摘:本文从实际应用的角度结合最新研究进展总结了影响UASB启动的诸因素及启动时应注意的问题，最后介绍了几种加快启动的最新措施。 |
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Abstract: Factors that influence the delay precision of commerical delay detonator were introduced.The charging and pressing technique, variation and time variation law of the composition, the powder processing was discussed.
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文摘:介绍了工业延期雷管延期精度的影响因素，并对装配工艺中的装压药工艺方法、药剂变化原因、药剂时间变化规律和制药工艺控制进行了讨论。 |
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Abstract: Ferroelectric based nanocomposites are a new class of mesoscale functional materials which have a high dielectric constant and high electric field.Recent progress in this research area is reviewed briefly,and a novel ferroelectric composite with
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文摘:铁电体基纳米复合材料作为一类新型功能材料，提供了一系列“高介-高场”调制的介观系统.文章介绍了这一领域的最新研究进展，并重点报道了一类新型铁电体基纳米复合材料――铁电体半导体量子点复合材料的制备与光学性质，该材料在新型电致发光元件及量子点激光器件中有着很好的应用前景. |
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Abstract: Field experiments were conducted to observe winter wheat resp onse to nonunifo rm sprinkler irrigation under various Christiansen uniformity coefficient (CU) levels ranging from 62%to 82%.
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文摘:利用田间试验研究了不同喷灌均匀系数条件下的冬小麦耗水规律及喷灌蒸发漂移损失。 |
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Abstract: First support environment is introduced finally the test's design principle and the structure of the system is emphases discuss in the article.
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文摘:介绍了测试系统的支撑环境并重点探讨了测试的设计原则和系统结构的设计。 |
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Abstract: First, this paper deduced the diffraction equation for refractive index phase modulation holographic grating, and pointed out that the diffraction efficiency was mainly influenced by refraction index modulation, and the diffraction efficiency of
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文摘:首先推出折射率相位调制型全息光栅的衍射方程,由此说明衍射效率主要取决于调制折射率,且各级衍射光的衍射效率不同是多种原因造成的。 |
