evaluation present on present state of enviroment  环境现状评价

Investigation on Present status  现状调查

A Preliminary Investigation on Hancheng Yangge  韩城秧歌初步调查

investigation on accuracy and precision  准确度和精密度研究

investigation on afforestation in autumn  秋季造林调查

Investigation on awareness  认知调查

Investigation on Cavitation Experiment in Pumps  泵汽蚀试验的探讨

investigation on current cituation  现状调研

Investigation on current situation  现状调查

Investigation on Damage  破损调查

investigation on danger  险情勘察

investigation on development  发展对策

investigation on disease and pest  病虫调查

Investigation on Energy Consumption  能耗调研

investigation on expressway conditions  路况调查

Investigation on farmers  农民调查

Investigation on feasibility  可行性调查

Investigation on healthcare  卫生情况调查

Investigation on Hot-air Furnace Reworking Design  热风炉改造设计的探讨