直接測數(shu)法(fa)是(shi)(shi)憑借(jie)照布(bu)鏡或織(zhi)物(wu)密度分(fen)析鏡來完成。織(zhi)物(wu)密度分(fen)析鏡的刻度尺(chi)長(chang)(chang)度為5cm,在(zai)分(fen)析鏡頭下(xia)面,一塊長(chang)(chang)條形玻璃(li)片上刻有(you)一條紅線, 棉(mian)(mian)帆布(bu) 就是(shi)(shi)棉(mian)(mian)線布(bu) 俗稱CC56,還有(you)聚酯輸(shu)(shu)送帶、尼龍輸(shu)(shu)送帶、相比棉(mian)(mian)帆布(bu)輸(shu)(shu)送帶拉力(li)大。棉(mian)(mian)帆布(bu)輸(shu)(shu)送帶,適用于短距離、載量中(zhong)等(deng)條件下(xia)輸(shu)(shu)送物(wu)料(liao),拉力(li)比較(jiao)低,承重有(you)一定的...