The paintings in this cave refute the old theory that Cro-Magnon people painted animals that they hunted and then ate.
这个洞穴里的绘画驳斥了古老的理论，即克鲁马努人画的动物是他们狩猎和食用的。
Research methods: Based on the elastic and plastic theory, the stress distribution of soil cave in foundation can be deduced in karst region.
研究方法：根据弹塑性理论，推求得到岩溶地基中土洞周边土体的应力状态。
According to the requirements for the involute gear and powder metallurgy theory, the present article gives a principle and method for designing die cave and structure.
根据渐开线齿轮的基础知识及粉末压制烧结理论确定了设计模具型腔及结构的原理和方法。
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