For example, if 840 yards, or one hank, of cotton weighs 1 pound, the yarn number is 1 s; if it requires 30 hanks to weigh 1 pound, the yarn is 30s.

• 例如,840码的纱线,或一绞纱线,重量为一磅,纱线的支数为1支;如果30绞重一磅,则纱线的支数为30支