直接測數法(fa)是憑借(jie)照布鏡(jing)或(huo)織(zhi)(zhi)物(wu)密(mi)度(du)分(fen)(fen)析(xi)(xi)鏡(jing)來(lai)完成。織(zhi)(zhi)物(wu)密(mi)度(du)分(fen)(fen)析(xi)(xi)鏡(jing)的刻(ke)度(du)尺(chi)長度(du)為5cm,在(zai)(zai)分(fen)(fen)析(xi)(xi)鏡(jing)頭下面,YH2266印(yin)花帆(fan)布 維尼綸纖維強度(du)達(da)200牛/(毫米·層),彈(dan)性(xing)(xing)伸長比尼龍(long)纖維小,易與橡膠(jiao)粘合(he),耐熱性(xing)(xing)能好,但濕態時(shi)強度(du)要(yao)降低10~25%,僅(jin)在(zai)(zai)中(zhong)國、日本等少(shao)數國家應用(yong)。在(zai)(zai)編織(zhi)(zhi)帶芯(xin)時(shi)可以只用(yong)一種...