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Polystyrene-supported chloroaluminate ionic liquid as a new heterogeneous Lewis acid catalyst for Kn
Non-hygroscopic polystyrene-supported chloroaluminate ionic liquid was prepared from the reaction of Memfield resin with......
Mapping Soil Organic Carbon Using Local Terrain Attributes:A Comparison of Different Polynomial Mode
Local terrain attributes,which are derived directly from the digital elevation model,have been widely applied in digital......
Mesh motion strategy is one of the key points in many fluid-structure interaction problems. One popular technique used t......
Purpose-This paper aims to study the monetary transmission mechanism of China from January 1996 to December 2009 under e......
为了分析油气弹簧连通形式对其系统动态特性的影响,建立了两轴连通式油气弹簧模型,并利用台架试验证实了模型的正确性;建立了4种不......
为了克服粒子群算法易陷入早熟收敛的缺点及提高差分进化算法的搜索能力,提出了一种自适应交替的粒子群差分进化算法.该算法采用自......
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分析了提高12V20/27柴油机功率的可行性,并在此基础上指出:在原柴油机结构尺寸不做大的变动的前提下,采取调整压缩比、加大空冷器......
为保证多轴驱动车辆的行驶性能和操作舒适性,分动器的设计至关重要。针对某款全时四驱电控分动器总成的开发与测试,介绍了全时四驱......
Comparison of Parallel Kinematic Machines with Three Translational Degrees of Freedom and Linear Act
特别地平行运动学的机器(PKM ) ,新机器人结构的发展被不同结构合成方法广泛地系统化。最近的研究逐渐地与自由(DOF ) 的不到六度集......
以碱式热稳定型二烷基二硫代磷酸锌(ZDDP)和清净分散剂为主剂,研制出高压抗磨液压油复合添加剂,用该复合剂调制的液压油质量达到国际先进水......
组织之间的知识流动形成了知识链。为使知识链健康发展,科学、全面地评价知识链的绩效至关重要。本文针对知识链的特点,提出知识链绩......