This thesis summarized the research history and achievements on the dynamic property of concrete and its component materials: cement mortar, aggregate and the interface between them.
本文首先对混凝土及其组成材料：水泥砂浆、粗骨料和两者的交界面的动态力学性能的研究历史和现有研究成果作了系统的总结。
The order of our research is to develop laser dynamic marking system that intellectual property belongs to us.
本论文研究的目的是，开发具有自主知识产权的激光动态标刻系统。
The shearer's ranging arm is a multi-body system and the load characteristic is very complicated, so it brings many difficulties to research dynamic property with traditional computational method.
采煤机截割部是一个复杂的多体系统，其负载特性非常复杂，采用传统的计算方法研究其动态特性非常困难。
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