... 调查研究技术 fact-finding technique 调查研究阶段 investigation phase; research stage 调查研究问题 look into a problem ...
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由于对农村居民的交通需求了解很少，因此第一阶段，即1985年12月到1987年12月，主要集中在调查研究上。
Little was known about the transport demands of the rural households, so Phase I, between December 1985 and December 1987, focused on research.
通过调查研究，提出了煤层顶板工程地质分类方案，此方案简单易行，验证可靠，适用于煤田勘探阶段。
Based on the investigation and research, a new plan of engineering geology classification is put forward. The plan is easy and reliable, suitable to the exploration stage.
它从稻田生态系统出发，调查研究水稻—有害生物—有益生物—环境—管理的多维关系，并以水稻生育期为阶段进行总体预报。
Based on the rice ecological system, the relationship of rice, pests, useful organisms, environment and management id studied, and the overall forecast is made at different growth period of rice.
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