Great changes have taken place in the structure of journals storage, service mode, service contents, and the methods of utilization of journal literatures under the environment of networks.
网络环境使图书馆期刊工作在馆藏结构、服务方式、服务内容、文献利用手段等方面都发生了重大变化。
In this paper, the main challenges of hydrogen storage for hydrogen economy have been summarized and analyzed from the recent published US Department of Energy literatures and other papers.
本文总结了近年来车用储氢的研究进展，从各个不同的储氢方法和车用的相关要求作了一一分析。
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