成员的完整列表，这些成员属于 CThostFtdcInputExecOrderField,包括所有继承而来的类成员

AccountID	CThostFtdcInputExecOrderField
ActionType	CThostFtdcInputExecOrderField
BrokerID	CThostFtdcInputExecOrderField
BusinessUnit	CThostFtdcInputExecOrderField
ClientID	CThostFtdcInputExecOrderField
CloseFlag	CThostFtdcInputExecOrderField
CurrencyID	CThostFtdcInputExecOrderField
ExchangeID	CThostFtdcInputExecOrderField
ExecOrderRef	CThostFtdcInputExecOrderField
HedgeFlag	CThostFtdcInputExecOrderField
InstrumentID	CThostFtdcInputExecOrderField
InvestorID	CThostFtdcInputExecOrderField
InvestUnitID	CThostFtdcInputExecOrderField
IPAddress	CThostFtdcInputExecOrderField
MacAddress	CThostFtdcInputExecOrderField
OffsetFlag	CThostFtdcInputExecOrderField
PosiDirection	CThostFtdcInputExecOrderField
RequestID	CThostFtdcInputExecOrderField
ReservePositionFlag	CThostFtdcInputExecOrderField
UserID	CThostFtdcInputExecOrderField
Volume	CThostFtdcInputExecOrderField