However, due to its relatively late beginning in China, the design level and the construction technology are not very mature yet, the economic effect are not very good.
然而由于在我国起步相对较晚，设计水平和施工技术还不是很成熟，经济效果不是很好。
The design method and scheme of reinforcement, underground construction technology and monitoring, The evaluation of the strengthening effect and techno-economic benefits.
加固支护设计方法和方案，井下施工和矿压监测，支护加固效果和技术经济效益分析。
Not only the impact of FDI on GDP growth, but also the spillover effect of FDI on two important factors which can affect economic growth: capital and technology is demonstration.
FDI不仅对GDP的增长产生直接的影响，而且对推动经济增长的两个主要因素：资本和技术产生明显的溢出效应。
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