直(zhi)接測數法是憑借照(zhao)布鏡(jing)(jing)或織物密度(du)(du)(du)分析鏡(jing)(jing)來完成。織物密度(du)(du)(du)分析鏡(jing)(jing)的刻度(du)(du)(du)尺長(chang)度(du)(du)(du)為5cm,在分析鏡(jing)(jing)頭下(xia)面,中圓點印花帆布 維(wei)(wei)尼綸纖維(wei)(wei)強度(du)(du)(du)達(da)200牛/(毫(hao)米·層),彈性伸長(chang)比尼龍纖維(wei)(wei)小(xiao),易(yi)與橡膠粘合,耐(nai)熱性能好,但濕態(tai)時強度(du)(du)(du)要(yao)降低10~25%,僅在中國、日本等少數國家應用。在編織帶芯時可(ke)以只(zhi)用一種(zhong)纖維(wei)(wei),...