... engineering economic investigation 工程经济调查 technical economic investigation 技术经济研究 Social Economic Investigation 社会经济调查 ...
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Investigation and benefit analysis on construction of fenced pastures indicate that fenced pasture has marked ecological, economic and social benefits.
通过对草库伦建设的全面调查及效益分析，表明草库伦具有十分明显的生态效益，经济和社会效益。
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