In jarsoftenseefriendsdiscusstents,packsoffabricspecifications.Wesometimessay600D300Dfabricthanthestrong, 210T190Tfabricthangood.Thisexpressionis notscience.Istudied textiles,textile andtell you about thenextwithlittleknowledge,to avoid beingdeceivedprofiteers.
T->unit areaoffabric, the number oforganza.T andthe greaterareaof theyarnin the unitmore.
Tothatpiece of fabric,Dand Tmust beusedsimultaneously.Lightwith aD orT ismeaningless.As in the followingfigure,hard to say100D * 14Tthan300D * 6Tgoodorbad.Afineyarn,but thedensefabric.Athickyarn,but the fabricis not dense.
Thisfigure is aschematic diagram, in reality,there is no14tor6Tof thefabric.