它们是用人工切割的花岗岩石块所建成。
主要叙述了人工神经网络理论在磨料水射流切割技术中的应用。
This paper elaborates on the Artificial Neural Network application to the abrasive water jet cutting technology.
钢管桁架结构中存在大量的钢管相贯连接节点，传统的人工放样切割已经不能满足精度和工厂化生产的要求。
A great many intersecting lines exist among steel tube truss structure but the traditional manual-lofting cut can no longer fulfill the requirement for precision and mass production.
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