It has some reference value for the study of model experiment in mining and geological engineerings, etc.
本文的研究结果对于采矿工程和地质工程等问题的模拟实验研究具有一定的参考价值。
They are particularly suitable for heavy shock loads as experienced in mining cars, support rollers, etc. Their load-carrying capacity in the axial direction is low.
它们特别适合于在采矿车，支重轮的大冷门，有经验的负载等，他们承载的轴向能力较低。
This project studied the key technologies for the management of XML documents, including the storage and query of XML documents, the semantics of XML documents, and the knowledge mining, etc.
本项目研究XML文档管理的若干关键技术，包括XML文档的存储与查询，XML数据的语义，针对XML数据的知识挖掘等。
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