Calculation of bolt group connection between hot-rolling channelbar and armor plate shows that nonlocal elastic medium's elastic parameters for joint interface are all time-varying.
热轧槽钢、钢板螺栓组连接的工程实例计算表明：结合部非局部弹性介质弹性参数皆为时变参数；
Experimental results show that the structure of nearby alloy layers of composite steel produced by casting-rolling bonding transits smoothly and exists no evident interface.
实验结果表明，采用浇铸-轧制复合技术制备的复合板不同成分合金层间组织过渡平缓，无明显界面。
Experimental results show that the structure of nearby alloy layers of composite steel produced by casting-rolling bonding transits smoothly and exists no evident interface.
实验结果表明，采用浇铸-轧制复合技术制备的复合板不同成分合金层间组织过渡平缓，无明显界面。
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