investment lag投资时滞,投资的时间延滞investmentn.投资；投资额；投入investment outlay coefficient投资支出函数investment project assessment投资项目评估学investment orientation of FDI外商直接投资投向investmenty feasibility study投资可行性研究investment estment attraction引资investment phase of a project项目投资时期investment guaranty programme投资保证计划investment-benefit analysis投资效益分析investment reference services投资参考事务investment invitation ability引资能力