直接(jie)測(ce)數(shu)法是(shi)憑(ping)借(jie)照布鏡(jing)或織(zhi)物密度(du)(du)分析(xi)鏡(jing)來完成。織(zhi)物密度(du)(du)分析(xi)鏡(jing)的(de)刻(ke)度(du)(du)尺長度(du)(du)為5cm,在(zai)分析(xi)鏡(jing)頭下面,一(yi)塊(kuai)長條形玻(bo)璃片上刻(ke)有一(yi)條紅線, 維(wei)尼綸纖(xian)維(wei)強度(du)(du)達200牛/(毫(hao)米·層),彈性(xing)(xing)伸長比(bi)尼龍(long)纖(xian)維(wei)小,易與(yu)橡膠粘合,耐熱性(xing)(xing)能好,但濕態時(shi)強度(du)(du)要降低10~25%,僅(jin)在(zai)中國、日本等少數(shu)國家應用。在(zai)編織(zhi)帶芯時(shi)...