直接測數(shu)法是憑(ping)借照布鏡(jing)或織(zhi)物密度(du)(du)(du)分(fen)析鏡(jing)來完成。織(zhi)物密度(du)(du)(du)分(fen)析鏡(jing)的刻(ke)度(du)(du)(du)尺(chi)長(chang)度(du)(du)(du)為(wei)5cm,在分(fen)析鏡(jing)頭下面,一(yi)塊長(chang)條(tiao)形玻璃片上刻(ke)有一(yi)條(tiao)紅線, 尼(ni)龍(long)纖(xian)(xian)維強度(du)(du)(du)高達700牛(niu)/(毫米·層),耐水,抗腐(fu)蝕,耐彎曲(qu)疲勞(lao);但彈性(xing)伸長(chang)較大。聚酯纖(xian)(xian)維性(xing)能(neng)與尼(ni)龍(long)纖(xian)(xian)維相近(jin),而使用(yong)時彈性(xing)伸長(chang)僅為(wei)尼(ni)龍(long)纖(xian)(xian)維的一(yi)半,是一(yi)種有發展(zhan)前(qian)途...