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Abstract: Abstract The relation of organic synthesis and green chemistry is briefly described.The importance of atom economy in organic synthesis is emphasized.
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文摘:本文概述了有机合成和绿色化学的关系，并介绍了原子经济性的概念及其在有机合成中的重要性。对21世纪的化学发展提出了希望。 |
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Abstract: Abstract: This paper introduced question of the brine purify in the Jiangxi Salt Mine.The reaction jug reformation and economic effect.
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文摘:介绍了江西盐矿卤水净化存在的问题，对反应罐进行了改造，取得的经济效益。 |
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Abstract: Abstract： As to the surge signal existing in a radar analog circuit，a simple and prectical method for impulse signal was presented.
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摘要：摘要：针对某型雷达模拟电路中存在的浪涌信号，提出了一种简单、实用的冲激响应理论分析方法。 |
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Abstract: Abstract：It introduces the principle of value engineering. The concept of combining value engi?neering and reliability engineering to improve reliability of common products and its application is suggested.
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摘要：摘要：介绍了价值工程的原理，提出了如何有机地结合价值工程和可靠性工程的方法，以充分发挥各自的优势，提高普通产品可靠性的方法及应用注意事项。 |
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Abstract: Abstract：It is intended to promote the understanding of about safety principles through the relation of safety with electric insulating materials' characteristics such as dielectric strength, moisture absorption, heat resistance, fire resistance
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摘要：摘要：通过论述电气绝缘材料的介电、吸湿、耐热、阻燃和机械强度方面的性能与安全的关系，加深对安全原则的理解，以保证电子产品在生产、使用过程中的安全性。 |
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Abstract: Abstract：Reliability models are reliability block diagram and mathematics models that built to predict and evaluate reliability of products. Several system reliability models and their calculational methods are introduced.
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摘要：摘要：可靠性模型是指为预计或估算产品的可靠性所建立的可靠性框图和数学模型。介绍了几种系统可靠性模型及其相应的可靠性计算方法。 |
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Abstract: Abstract：The status and trend of the IC failure analysis technology in China was reviewed with practical cases，including nondestructive failure analysis，signal tracing，secondary effect，sample preparation and back side failure location.
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摘要：摘要：通过实例综述了目前国内集成电路失效分析技术的现状和发展方向，包括：无损失效分析技术、信号寻迹技术、二次效应技术、样品制备技术和背面失效定位技术，为进一步开展这方面的工作提供参考。 |
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Abstract: Abundant micrcspherulites have been recently discovered first in the Doushantuo Formation-Dengying Formation boundary layer of the Miaohe Sinian section in Zigui, Hubei.
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文摘:在湖北秭归庙河震旦系剖面陡山沱组-灯影组界线层内首次发现了微球粒。 |
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Abstract: According to adults' knowledge instructions, receiving ability and adults' psychology, the paper gets better results in designing teaching material and discussing teaching methods.
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摘要:文章根据成人的知识结构、接受能力、心理特点，设计教学内容和教学方法，收到较好效果。 |
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Abstract: According to analyzing equipment's vibration.The failure of screw pump was reaso ned.And the old packing seal was converted into the combination of oil seal,laby rinth and packing seal,in result,the leakage of the pump had been solved comp letel
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文摘:利用设备的振动分析对螺杆泵密封失效原因作诊断，并将原有的填料密封改造为橡胶油封、迷宫密封及填料密封的组合形式,彻底解决了泄漏问题。 |
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Abstract: According to experience of boiler-reforming, and the theory of transmit heat and hydraulics, the problems existing in the circulatory system and interior devices of hot-water boiler are analyzed, the methods of resolving the problems are propose
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文摘:本文根据改炉情况和传热学、水动力学的原理，分析了热水锅炉水循环系统及内部装置存在的问题，并提出了解决这些问题的方法和措施。 |
