NEW STEP BY STEP MAP FOR 短期交易

Bitcoin (BTC) is usually a digital forex that works by using peer-to-peer engineering to work without central authority or banking institutions; BTC transactions are carried out collectively by the community. 采用【逐仓保证金模式】时，每个合约的双向持仓将会独立计算其保证金和收益，只有开仓可用保证金大�