直接測數法是憑借照布(bu)(bu)鏡(jing)(jing)或織物(wu)密度(du)(du)(du)分析(xi)鏡(jing)(jing)來完(wan)成。織物(wu)密度(du)(du)(du)分析(xi)鏡(jing)(jing)的(de)刻(ke)度(du)(du)(du)尺長(chang)度(du)(du)(du)為5cm,在分析(xi)鏡(jing)(jing)頭下(xia)面,一(yi)塊長(chang)條形玻璃片上刻(ke)有一(yi)條紅線(xian), 棉(mian)(mian)帆(fan)布(bu)(bu) 就是棉(mian)(mian)線(xian)布(bu)(bu) 俗稱CC56,還有聚(ju)酯輸(shu)送(song)帶(dai)(dai)(dai)、尼龍輸(shu)送(song)帶(dai)(dai)(dai)、相(xiang)比(bi)棉(mian)(mian)帆(fan)布(bu)(bu)輸(shu)送(song)帶(dai)(dai)(dai)拉力(li)(li)大。棉(mian)(mian)帆(fan)布(bu)(bu)輸(shu)送(song)帶(dai)(dai)(dai),適(shi)用于短距離、載量中等條件下(xia)輸(shu)送(song)物(wu)料,拉力(li)(li)比(bi)較(jiao)低,承(cheng)重有一(yi)定的(de)...