通过这种计量体系，一个50支的棉纱是比较细的，即一个重为一磅，长为840码，有50个纱绞的纱线。

By this system, a No. 50 cotton is a fine yarn in which 50 Hanks, each 840 yards long, weighs one pound.

youdao

通过这种计量体系，一个50支的棉纱是比较细的，即一个重为一磅，长为840码，有50个纱绞的纱线。

By this system, a No. 50 cotton is a fine yarn in which 50 Hanks, each 840 yards long, weighs one pound.

youdao