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Abstract: This paper concerns studies on rhizobia in Symbiosis with important legume soybean and peanut crops in China, following:1) Summarized bio-diversity of rhizobia, including indigeneous population, isolation frequency, strain type, distribution, an
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文摘:针对我国主要豆科作物大豆和花生的研究成果，并结合本身研究工作内容，(1)总结了与宿主共生的根瘤菌生物学多样性，包括大、小样本的土著根瘤菌群体数量、分离频率、类型与分布及其菌株―宿主共生混交性与亲和性；(2)评述了根瘤菌―宿主植物共生体双边固氮改良，包括优良菌株的选育、宿主品种资源共生特性的评价与利用及特异性状的选择；(3)讨论了我国这一类共生体资源的丰富性以及有必要进一步加大力度研究有益资源的开发和利用的问题。 |
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Abstract: This paper considers the decentralized stabilization problem via local state feedback control laws for a class of large-scale linear discrete-time systems with delay interconnections.A sufficient condition for decentralized stabilizability is de
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文摘:用一组线性矩阵不等式给出一类线性离散时滞大系统分散能镇定的一个充分条件，进而，通过建立和求解一个凸优化问题，提出了具有较小反馈增益参数的分散稳定化状态反馈控制律的设计方法.所得到的控制器不仅使得闭环系统是稳定的，而且还可以使得闭环系统状态具有给定的衰减度. |
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Abstract: This paper criticizes 4 specious propositions about current controversy on theory of value：（1）the proposition that labor is the only resource of value needn't to be verified; (2) value is created by live labor, but distributed by ownerships of p
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内容提要本文剖析了当前有关价值争论中的4个似是而非的命题：（1）劳动是价值的惟一源泉无需证明；（2）价值是由活劳动创造的，价值的分配是按生产要素所有权进行的；（3）价值是在生产过程中决定的，在流通中实现的；（4）价值是一种社会关系，其中不包含任何使用价值原子。 |
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Abstract: This paper deals briefly with the major events during the developmental process of mechanical ventilation and establishment of artificeal air passage, its main figures and historical contributions.
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文摘:简述人工气道建立及机械通气技术发展过程中的主要事件、主要人物及历史贡献，阐明其重要意义。 |
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Abstract: This paper deals with reference to the development of academic thought of biological science and theories of system, information, cybernetics, dissipative construction, coordination and mutation, in approaching those theories with excellent dige
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文摘:本文根据生物科学学术思想的发展，运用系统论、信息论、控制论、耗散结构论、协同论和突变论的观点和方法，结合近代储藏物昆虫的一些研究进展进行分析，看出研究储藏产品保护基础科学的重要性及其在指导实践中的作用。 |
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Abstract: This paper deals with the advance of micropropagation and elimination of the pathogen of witch-broom disease (Mycoplasma Like Organisms:MLO) in Chinese jujube; and according to the latest achievements in this field,summarises the experence achie
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文摘:综述了枣树离体培养快速繁殖现状及脱除枣疯病原MLO的研究进展，并根据国内外最新研究成果，对已取得的经验和影响枣树离体培养的因素作了总结，指出了当前工作中存在的主要问题。 |
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Abstract: This paper deals with the application of vacuum system for acid & alkali liquid transportation(VSAALT) in which practical problems are analyzed and the equipment selection for VSAALT is also minutely discussed.
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文摘:本文结合实践介绍真空法输送酸碱液系统，着重分析实际应用中遇到的问题，并对抽真空系统的设备选型进行详细的说明。 |
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Abstract: This paper deals with the sources and harmfulness of environmental radon,analyses the geological background of radon in the urban district of Beijing and some basic measures for preventing and reduciang radon,and emphatically points out that ind
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文摘:论述了环境氡的来源、危害，着重分析了室内氡的主要来源是地基岩石、土壤，分析了北京市区氡的地质背景和防氡与降氡的一些基本措施。 |
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Abstract: This paper deals with the test of Q235 wire through different technologies such as drawing first and hardening second or hardening first and drawing second.
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文摘:对Q235钢盘条，采用先拉拔后淬火或先淬火后拉拔两种工艺方法进行试验。 |
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Abstract: This paper derives thecalculating formulas to the contact strength and oil-film thickness of the involute spur gear according to hydrodynamic lubrication principle.Through check with test,shows that they may rully replace now available Hertz for
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文摘:根据流体动力润滑原理，推导出了渐开线直齿圆柱齿轮接触强度及油膜厚度的计算公式，通过实验验证，说明它们可以完全分别代替现有的赫芝公式及通森公式。 |
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Abstract: This paper describes a laser beam quality analyzer based on CCD, computer and MATLAB. The detailed composition, basic function and characteristics of the software are presented.
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文摘:介绍了利用CCD、计算机并基于MATLAB开发的激光光束质量分析的软件，详细地介绍了该软件的组成、实现的基本功能及其特点。 |
