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.
通过对同一地区不同阶段的实地调查研究发现，当地农户总体来讲受益于旅游开发，但是旅游对收入增加的作用被夸大了。
It was found that local households generally benefited from tourism development but may have over-estimated the extra Income generated by tourism.
通过对同一地区不同阶段的实地调查研究发现，当地农户总体来讲受益于旅游开发，但是旅游对收入增加的作用被夸大了。
It was found that local households generally benefited from tourism development but may have over-estimated the extra Income generated by tourism.
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