According to an ecosystem'sessential function of substance circulation, energy exchanges and information transfer, the paper analyzes the function of E-Learning ecosystem.
根据生态系统的物质循环、能量流动和信息传递三大基本功能，分析了网络学习生态系统的功能。
2
The circulation in the mining rights issue, but also by severe restrictions on the initial transfer to allow conditional transfer.
在采矿权的流转问题上，也由最初的严格限制流转到允许有条件流转。
3
Experiment study of heat transfer mechanism and characteristics in high velocity circulation furnace has been accomplished for batch annealing furnace with high velocity burner.