直接(jie)測數法是憑借照布(bu)鏡(jing)或織(zhi)(zhi)物(wu)密(mi)度(du)(du)分析鏡(jing)來完(wan)成。織(zhi)(zhi)物(wu)密(mi)度(du)(du)分析鏡(jing)的(de)刻度(du)(du)尺長度(du)(du)為5cm,在分析鏡(jing)頭(tou)下面,一(yi)塊長條形(xing)玻璃片上刻有(you)一(yi)條紅(hong)線, 全棉印花帆布(bu),純棉帆布(bu),顧(gu)名思義,就是100%的(de)棉織(zhi)(zhi)物(wu)了,棉織(zhi)(zhi)物(wu)的(de)優點(dian)是吸(xi)濕性(xing)強(qiang),染色性(xing)能好(hao),手感柔(rou)軟(ruan),穿著舒適,外觀樸素,不易蟲(chong)蛀,堅(jian)牢耐用;其缺點(dian)就是快干性(xing)能...