接触次数 meaning in Chinese

frequency of exposure

The empirical analysis , using probit model , showed that the extension efficiency of the technique was obviously affected by following factors : income and cost , yield increase , farmers " age and education , non - agricultural income , farmer ' s social status , distance from town , frequency of farmers " contact with media and agricultural technicians
运用probit模型对超高茬麦田套稻技术推广的影响因素进行分析，结果显示亩增收节本、亩增产量、户主年龄、户主受教育时间、非农收入、是否干部、离镇距离、媒介频率、与农技人员接触次数对该技术的推广有显著影响。