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； By way of example, a firm that delivers a products or services to its consumer records the revenue on its P&L assertion, Although it hasn’t nevertheless gained payment. In the same way, liabilities are accounted for even when... https://bookmarks-hit.com/story20517482/pnl-for-dummies