本位 1.(货币本位) standard; basic unit:金本位gold standard; 金汇兑金本位the gold-exchange standard2.(本单位)one's own department or unit; one's own post:本位工作the work of one's own department; one's own work◇本位币 standard money; standard coin; 本位金属(货币)standard metal; 本位音[号][音乐]natural
The copper cash was used in the small business , the silver was used in the big transaction . when the people paid grain tax and paid taxes , they matched the silver with the copper cash 有清一代,主要实行银铜平行复本位的货币制度,小额交易用铜钱,大额交易用银支付;完粮纳税,银钱搭配。