An effective market investigation is the foundation of the item investment decision.
有效的市场调查是开发商进行项目投资决策的基础。
2
Soil: investigation and testing - Auscultation of foundation elements - Part 1: sonic core test.
土壤：调查和试验。基本元素听诊法。第1部分：声芯试验。
3
For the college physical education of the publication of near 10 years teaching material carry out investigation and quantitative analysis, on this foundation, form investigation analysis report.