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Abstract: The basic conception and control methods were briefed in modern system engineering, and the thinking of Large Scale Systems applied in modern greenhouse system modeling was advanced.
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文摘:在简介现代系统工程发展的基础上，引入了“大系统”的基本概念，综述了“大系统”理论的特征、分类和大系统的控制方法。 |
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Abstract: The basic contruction of a far infra-red broiling reel was introduced,and the movement of materials inside the reel and design of the machine were analysized.
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文摘:介绍了远红外转筒炒籽机的基本结构，并结合物料运动，分析了几个主要设计问题。 |
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Abstract: The basic theory and function of CD retrieval and systemic constitution of multimedia searching databases CD co-developed by the author and Tsinghua University is stated.The system consists of load,databases,HTML browser,editing and print.The sy
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文摘:介绍了作者与清华大学合作开发的多媒体全文检索数据库光盘的系统组成与光盘的检索功能及原理.系统由标引系统、资料建库系统、超文本浏览器、编辑出版系统组成.该系统几乎支持所有的多媒体格式，具有强大的检索功能，不仅囊括了手工检索的全部方法，还可进行模糊逻辑检索和任意混合检索.其检索过程实际是一个数据匹配的过程.实践证明，光盘数据库使检索大众化、简单化和普及化，在信息储存方面前景广阔. |
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Abstract: The boundary-value problem of an ultra-hyperbolic equation with an integral condition is studied and existence and uniqueness of the solution are proved.
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文摘:本文研究一类超双曲型方程的极限问题，提出并证明了具一积分条件的超双曲型方程的边值问题解的存在性和唯一性。 |
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Abstract: The calculation of bending force,is an important designing work in sheet metal.It influences the choosing of equipment tonnage,die material selection and the life span of a die.In the article,a method for calculating the sidepushing force acted
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文摘:弯曲力的计算在板料冲压中是一个重要的设计工作，影响着设备吨位、模具材料及其使用寿命，介绍了一种计算弯曲凸模所受侧推力的计算方法。 |
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Abstract: The cardinal principle and modes of automatic power shift for high horsepower tractor,as well as the structure of main sensor，the sensing technology and the intergrated electrohydraulic control technology are introduced.Some useful data have bee
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文摘:介绍了现代大功率拖拉机自动换挡控制系统的基本原理和方法，主要传感器的结构、传感技术及电液一体化控制技术，为现代大功率拖拉机自动换挡控制系统的设计提供了一些有用的资料。 |
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Abstract: The cast iron models of various graphite form were prepared by the way of directional solidification liquid-quenching.It was analyzed with the metallographical microscope,SEM and so on.The results show that the shape of the boundary and graphite
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文摘:用定向凝固液淬法制备了具有各种石墨形态的铸铁试样，借助于金相显微镜、SEM等对其进行了观察分析，发现界面推进速度对固液界面形貌及石墨形态均有影响，并考察了在界面推进速度相同的情况下，微量元素铈、硫对石墨形态的影响. |
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Abstract: The causation and scope of the flood were analyzed,the river stretch and investigation contents were described.The investigation result was analyzed.
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文摘:分析了产生呼玛河上游“88.8”洪水的暴雨成因和范围，阐述了洪水调查河段的选择和调查内容，侧重对洪水调查成果进行合理性分析。 |
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Abstract: The cause for blasting toes in open stope of Tiegukeng mine was analyzed, the corresponding modification measures were proposed and the blasting effect of the stope were improved.
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文摘:对铁古坑矿露天采场爆破产生根底的原因进行了分析研究,提出了相应的改进措施,使采场爆破效果得到了改善。 |
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Abstract: The character of electrode material is an important factor affecting and limiting the structure and property of batteries.Thereby,the main types and their features,fundamental properties,and preparation methods of the porous substrate materials
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文摘:简要介绍了电池用多孔金属电极基体材料的主要类型及其特点、基本性能要求和制备方法，旨在提供改善该材料制备工艺的线索和强化其性能及性能关系研究的必要。 |
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Abstract: The characteristcs of melt-spurt polypropylene fibre sieve-core was a nalyzed.The process condition of filtration and reverse-wash of sieve-core on base of experience was studied.
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文摘:分析了熔喷聚丙烯纤维滤芯的特点，并在实验基础上对其过滤与反洗的工作条件进行了初探。 |
