然而，交易所必须在结算中给出最终的真实盈亏。因此，可以通过最终的真实盈亏推导出盈亏修正值。 单向双向：某些产品的手续费只在开仓时收取，有些则在开仓和平仓时都收取； For instance, an organization that delivers a service or product to its buyer data the profits on its P&L assertion, Though it hasn’t still been given payment. In the same way, liabilities are accounted for regardless if the ... https://www.youtube.com/watch?v=qMmsQ4kKgY4