直接測(ce)數法是憑借(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)的刻(ke)度(du)(du)尺長(chang)度(du)(du)為(wei)5cm,在分析(xi)鏡(jing)頭下面,一塊長(chang)條形玻璃片(pian)上(shang)刻(ke)有一條紅線, 輸送(song)帶用(yong)纖(xian)維織(zhi)物作(zuo)(zuo)帶芯,用(yong)一般橡膠(jiao)作(zuo)(zuo)覆蓋材(cai)料(liao),表面光滑平整(zheng)。棉纖(xian)維是應用(yong)最早(zao)的帶芯材(cai)料(liao),易(yi)與橡膠(jiao)粘合,濕(shi)態時強度(du)(du)略有提高(gao),但(dan)破(po)斷強度(du)(du)低〔大多(duo)在56牛/(毫米·層(ceng))...