直(zhi)接測數法是憑借(jie)照布(bu)鏡(jing)或(huo)織(zhi)物(wu)(wu)密(mi)度分析(xi)鏡(jing)來完成。織(zhi)物(wu)(wu)密(mi)度分析(xi)鏡(jing)的(de)(de)刻度尺長度為5cm,在分析(xi)鏡(jing)頭下面,YH2279印花帆布(bu) 全棉(mian)印花帆布(bu),純棉(mian)帆布(bu),顧名(ming)思(si)義(yi),就(jiu)是100%的(de)(de)棉(mian)織(zhi)物(wu)(wu)了,棉(mian)織(zhi)物(wu)(wu)的(de)(de)優點是吸濕性(xing)(xing)強,染色(se)性(xing)(xing)能好,手(shou)感柔軟,穿著(zhu)舒(shu)適,外觀(guan)樸素,不易蟲(chong)蛀,堅牢耐用;其缺點就(jiu)是快干性(xing)(xing)能差。全棉(mian)印花...