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The paper introduces a new highly-effective synthesis method. Decoquinate was synthesized with catechol as starting materials via substitution, reduction, and at last cyclization with Dowtherm Aas solvent.
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摘要以邻苯二酚为原料，通过一系列取代反应，再经过还原、缩合，最后在高沸点的混合有机溶剂中关环。制备的3-喹啉羧酸乙酯衍生物的总收率为24.2%。 |
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The paper introduces a new kind of Sudden Imbalance Simulator and describes the principle of Sudden Imbalance and its method of control.
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摘要文章介绍了产生突发不平衡的装置，敍述了不平衡质量产生的原理及控制方法，最后进行了突发不平衡动态响应实验。 |
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The paper introduces a novel microcomputer-based with non-contact technicality of the high power AC compensated stabilizer.
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摘要介绍一种基于单片机的无触点补偿式大功率交流稳压器。 |
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The paper introduces a practical single-chip synchrocontroller by photoelectric drop ring, expounds photoelectric detection, designs and tests of the controller hardware and software.
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摘要介绍了一种实用的单片机光电垂环控制器，阐述了光电垂环检测，控制器硬件和软件的设计及调试。 |
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The paper introduces a simple but practical liquid level measuring instrument.
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摘要本文介绍一种简单实用的液位测量装置。 |
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The paper introduces a sort of encrypted algorithm which comparied with the original length of cryptograph, the length of encrypted cryptograph will base on the difference of the encrypted information piece length to minish.
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本文介绍了一种加密后的密文长度与原明文长度文相比,依据所选加密信息块长度的不同而做相应减小的加密算法。 |
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The paper introduces acquired air rate of flow in admission pipes and fluidity in cylinder on single cylinder or multi cylinder engines with hot-wire anemometer, and demarcation and adjustment method of measure values are provided.
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摘要本文介绍了利用热线风速仪测量单缸与多缸内燃机进气管内流速、气缸内气体流动以及标定与修正的方法。 |
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The paper introduces briefly the process and work of new Dongguan library construction, including project organization, building design, development outline, function distribution, model of operation and management, model of service, etc.
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摘要从馆舍建设和业务准备两个方面概要介绍了包括项目组织、建筑设计、发展纲要、功能布局、运作管理模式、服务模式等在内的东莞图书馆新馆建设的过程和各项工作情况。 |
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The paper introduces development and utilization status of phosphate ore resources in Wengfu phosphate ore distract, which contents including resources occur status, mining technique, beneficiation process and its modification and resources utilization pl
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摘要介绍了甕福磷矿区资源现状、开发技术条件、开采技术特点、选矿工艺及在生产实践中对选矿工艺改进调整后在资源利用重新规划方面的重大意义，及矿山的发展前景。 |
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The paper introduces some measure and calculation methods of slurry pump capacity, and focuses on how to analyze, measure and deduce the capacity without enough instruments, putting forward the theoretical computing formula.
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摘要介绍了渣浆泵现场流量的测量和计算方法，重点阐述了在没有足够仪器、仪表的情况下如何分析、测量并推导出渣浆泵的实际流量值，并从理论上给出了计算公式。 |
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The paper introduces some methods employed by the author in teaching mathematics, which involve leading students to experience the process of acquiring knowledge so as to reinforce their basic knowledge, encouraging students to question bravely so as to c
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摘要介绍了作者在数学教学中的几点做法：引导学生体验知识的形成过程，夯实基础；引导学生大胆质疑，培养创新意识和能力；引导学生讨论交流，相互促进，共同进步。 |
