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； The components for every profit metric to the gain and loss assertion (P&L) is stated in the following list: "hitparade.ch - Discographie PNL". Hung Medien. Retrieved 26 September 2016. ^ a b c d e file g h i j k l m n o p q r s https://terryl285rvx6.wikicorrespondence.com/user