直(zhi)接測數法是憑借照布(bu)(bu)鏡或織物(wu)密度分析(xi)(xi)鏡來(lai)完成。織物(wu)密度分析(xi)(xi)鏡的刻(ke)度尺長度為5cm,在分析(xi)(xi)鏡頭下面(mian)(mian),16安染色全棉帆布(bu)(bu) 從配料(liao)上,布(bu)(bu)包(bao)與皮包(bao)相比,形(xing)(xing)狀不牢固(gu),很(hen)容易變形(xing)(xing),所以生產(chan)布(bu)(bu)包(bao)時,一般會在面(mian)(mian)料(liao)上加壓(ya)一層(ceng)無(wu)(wu)紡(fang)布(bu)(bu)(盛(sheng)唐都:也就是女孩子(zi)經常用的壓(ya)縮面(mian)(mian)膜的原材(cai)料(liao))來(lai)穩(wen)固(gu)包(bao)形(xing)(xing),越(yue)重的無(wu)(wu)紡(fang)布(bu)(bu)的價格越(yue)高(gao)...