一、调查的时限和方法 此次调查是1997年4月开题,当年7月份开展统计调查工作,并举办了由区县统计局、工业局(总公司)、海淀试验区、亦庄开发区等单位参加的专题培训班。为了贴近工业产品结构实际状况,确定所有数据均以1996年末实际完成数据作为本次调查的时限。 I. Time Limits and Methods of Investigations The survey was initiated in April 1997. In July of that year, statistical investigations were carried out, and district and county statistics bureaus, industrial bureaus (head offices), Haidian pilot zones, and Yizhuang development zones were organized. Participate in special training courses. In order to keep abreast of the actual conditions of the industrial product structure, all the data were determined with the actual data at the end of 1996 as the time limit for this survey.