这里列出了所有结构体和联合体的成员变量，并附带结构体或联合的详细说明:

- u -

• u64 : EMTQueryCreditDebtInfoByPageReq
• under_ticker : EMTQueryIssueTickerRsp
• underlying_security_id : EMTQueryOptionAuctionInfoRsp
• underlying_security_id_source : EMTQueryOptionAuctionInfoRsp
• underlying_type : EMTQueryCombineStrategyInfoRsp
• unit : EMTQueryETFBaseRsp, EMTQueryIPOTickerRsp, EMTQueryIssueTickerRsp
• unknown : EMTFundQueryReq, EMTFundQueryRsp, EMTQueryAssetRsp, EMTQueryOptionAuctionInfoRsp, EMTQueryStkPositionRsp
• unrealized_pnl : EMTQueryStkPositionRsp
• UnSubscribeAllIndexData() : QuoteApi
• UnSubscribeAllMarketData() : QuoteApi
• UnSubscribeIndexData() : QuoteApi
• UnSubscribeMarketData() : QuoteApi
• unused : EMTQueryIPOQuotaRsp, EMTUserTerminalInfoReq
• update_time : _EMTBJGZStaticInfo, EMTOptCombOrderInfo, EMTOptionExerciseOrderInfo, EMTOrderInfo
• upper_limit_price : _EMTBJGZStaticInfo, _EMTMarketDataStruct, _EMTQuoteStaticInfo, EMTQueryOptionAuctionInfoRsp
• usable_locked_position : EMTQueryStkPositionRsp