直接測數(shu)法是憑(ping)借照布鏡(jing)(jing)或織(zhi)物密度(du)(du)分析鏡(jing)(jing)來完(wan)成。織(zhi)物密度(du)(du)分析鏡(jing)(jing)的刻(ke)度(du)(du)尺(chi)長度(du)(du)為5cm,在分析鏡(jing)(jing)頭下面,一塊長條(tiao)形(xing)玻璃片上(shang)刻(ke)有一條(tiao)紅線, 維(wei)尼綸纖(xian)維(wei)強度(du)(du)達200牛/(毫米·層),彈性(xing)伸長比尼龍纖(xian)維(wei)小,易與橡(xiang)膠粘合,耐熱性(xing)能好,但濕態時強度(du)(du)要降(jiang)低10~25%,僅在中(zhong)國(guo)、日(ri)本等少數(shu)國(guo)家應用(yong)。在編織(zhi)帶芯時...