直(zhi)接測(ce)數法是(shi)憑借照布(bu)(bu)鏡(jing)(jing)(jing)或織物(wu)(wu)密度分析鏡(jing)(jing)(jing)來完成。織物(wu)(wu)密度分析鏡(jing)(jing)(jing)的(de)刻度尺長度為5cm,在分析鏡(jing)(jing)(jing)頭下面,一(yi)塊長條形玻璃片(pian)上(shang)刻有一(yi)條紅(hong)線, 全棉(mian)印花帆布(bu)(bu),純棉(mian)帆布(bu)(bu),顧名思義,就(jiu)是(shi)100%的(de)棉(mian)織物(wu)(wu)了(le),棉(mian)織物(wu)(wu)的(de)優(you)點(dian)是(shi)吸(xi)濕性(xing)強(qiang),染色性(xing)能好(hao),手感(gan)柔軟(ruan),穿著舒適,外觀樸素,不(bu)易蟲蛀,堅牢耐(nai)用;其缺點(dian)就(jiu)是(shi)快(kuai)干性(xing)能...