百米用经纱=经密/支数*门幅*0.0065 百米用纬纱=纬密/支数*门幅*0.0065
百米用经纱=(经纱号数*总经根数/(1-经缩率))/10000*1.01
百米用纬纱=纬纱号数*纬密*3.937*(筘幅+回丝)/100000*1.003
经纱百米用纱量计算: =0.06×总经根数/经纱支数×(1-织缩)%×(1-预缩)%×A布率%
a经纱用量=号数×总经根数/(1-经织缩率)×1/(1-预缩缩率)×1/10000×(1-回丝率)(公斤/百米)
b纬纱用量=纬密/10×号数×总经/(筘号×2)×2.54×1/10000×(1-回丝率)×1/(1-预缩缩率) (公斤/百米)
=总经/筘号/2/840/支数×纬密×(1+回丝率)/(1-预缩缩率) (磅/码)