on-the-spot investigation 实地考察
field investigation 现场调查;现场试
experimental investigation 试
研究 under investigation 在调查研究中
investigation report 调查报告书
sampling investigation 抽样调查
site investigation 现场调查;实地勘测
preliminary investigation 初步调查
general investigation 普查
investigation team 调查组
credit investigation 资信调查,信用调查
federal bureau of investigation n. (美)联邦调查局
epidemiological investigation [医]流行病学调查
investigation depth 探测深度
qualitative investigation 定性分析;质量集中分析
investigation stage 侦查阶段;勘察阶段
soil investigation 土质甸;土壤甸;土壤调查
judicial investigation 司法调查;法院调查
ground investigation 土地勘测
investigation form 调查格式