hard twist ply silk yam  真丝强捻股线

extra hard twist  高强捻

hard silk  含胶生丝

hard twist  紧捻

hard twist nubby yarn  高捻竹节纱

hard twist thread  强捻线

Hard Twist Yarn  强捻纱; 紧捻纱

compound-twist silk thread  复捻丝线

double-twist twist tube  倍捻加捻管

twist silk  缝纫丝线; 纶

complete equipment for silk and silk piece goods & spun silk piece goods  生丝-丝织物及纺织物生产成套设备

Hard Roof and Hard Coal  两硬条件

Hard Roof and Hard Floor  坚硬顶底板

hard-soft-hard sandwich media  三明治介质

twist on twist  同向加捻

twist-against-twist  反向加捻

twist-on-twist  同捻向

blanket with silk or rayon silk bindings  绸缎或人造丝捆边毡

silk manuscripts，(ancient)book copied on silk  帛书