直接測數法是憑借照布(bu)鏡(jing)或織物(wu)密(mi)度(du)分(fen)析鏡(jing)來完成(cheng)。織物(wu)密(mi)度(du)分(fen)析鏡(jing)的(de)刻(ke)度(du)尺長度(du)為5cm,在分(fen)析鏡(jing)頭(tou)下(xia)面,一(yi)塊長條(tiao)形(xing)玻璃片上刻(ke)有一(yi)條(tiao)紅線, 棉帆(fan)布(bu) 就是棉線布(bu) 俗稱CC56,還有聚(ju)酯輸(shu)送(song)(song)帶(dai)(dai)、尼(ni)龍(long)輸(shu)送(song)(song)帶(dai)(dai)、相(xiang)比(bi)(bi)棉帆(fan)布(bu)輸(shu)送(song)(song)帶(dai)(dai)拉(la)力大。棉帆(fan)布(bu)輸(shu)送(song)(song)帶(dai)(dai),適用于短(duan)距(ju)離(li)、載(zai)量中等條(tiao)件下(xia)輸(shu)送(song)(song)物(wu)料,拉(la)力比(bi)(bi)較低,承重有一(yi)定的(de)...