product_info 内容预览 product_id,district_id1,district_id2,district_id3,district_id4,lat,lon,railway,airport,citycenter,railway2,airport2,citycenter2,eval,eval2,eval3,eval4,voters,startdate,upgradedate,cooperatedate,maxstock 1,10201,20502,31003,45760,3.9