直接測數法是(shi)憑借照(zhao)布(bu)(bu)鏡(jing)(jing)或(huo)織(zhi)(zhi)物密(mi)度分(fen)析鏡(jing)(jing)來完成。織(zhi)(zhi)物密(mi)度分(fen)析鏡(jing)(jing)的(de)(de)刻度尺長度為5cm,在分(fen)析鏡(jing)(jing)頭(tou)下面(mian),一塊長條(tiao)形玻璃片(pian)上刻有一條(tiao)紅(hong)線, 棉帆布(bu)(bu) 就是(shi)棉線布(bu)(bu) 俗稱CC56,還有聚酯輸送(song)(song)帶、尼(ni)龍輸送(song)(song)帶、相比(bi)棉帆布(bu)(bu)輸送(song)(song)帶拉力(li)大。棉帆布(bu)(bu)輸送(song)(song)帶,適用于短距離、載量中等條(tiao)件下輸送(song)(song)物料(liao),拉力(li)比(bi)較低(di),承重有一定的(de)(de)...