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地开石的特性及其在铸造涂料巾应用的研究任意阶奇幻方构造规律的研究一种改善涡流室式柴油机燃烧的新方法徐庆柏赵再希等(42一1) 赵宗杰吴株陵(42一10)姚春德王祖汉等(42一招)水力喷射和水力磨粒喷射加工原理及工业应用李雅普诺夫函数构造与势函数稀土白口铸铁的研究拖拉机变
A STUDY ON THE STRUCTURAL LAW OF AN OPTIMAL Fantastic Square A New Method for Improving the Combustion of a Vortex Chamber Diesel Engine XU Qing-bai, ZHAO Zai-xi, et al (42-1) ZHAO Zong-jie WU Zhu-ling (42-10) Yao Chunde Wang Zuhan et al (42 a move) Principles of hydraulic jet and hydraulic abrasive jetting process and industrial applications Lyapunov function structure and potential function of rare earth white cast iron Research Tractor Variable