直(zhi)接測數法是(shi)憑借照布鏡(jing)(jing)(jing)或(huo)織(zhi)物密度(du)分(fen)(fen)析鏡(jing)(jing)(jing)來完成(cheng)。織(zhi)物密度(du)分(fen)(fen)析鏡(jing)(jing)(jing)的刻度(du)尺長度(du)為5cm,在(zai)分(fen)(fen)析鏡(jing)(jing)(jing)頭下面,一(yi)(yi)塊長條形玻璃片上(shang)刻有(you)一(yi)(yi)條紅線, 不用(yong)洗(xi)(xi)(xi)衣粉清洗(xi)(xi)(xi):洗(xi)(xi)(xi)衣粉中的酶在(zai)陽(yang)光下回產生化學(xue)反應,生成(cheng)黃色的物質,會使(shi)(shi)鞋(xie)子變黃。所以(yi)不建議使(shi)(shi)用(yong)洗(xi)(xi)(xi)衣粉清洗(xi)(xi)(xi)鞋(xie)子。巧用(yong)白色紙巾:將洗(xi)(xi)(xi)好的鞋(xie)子用(yong)白紙的衛(wei)生紙全面包裹(guo)起...