首页 / API 参考 / StockSharp.Twime.Dialects.Asts OrderMassCancelRequest StockSharp.Twime.Dialects.Asts 字段 Board public Utf8String4 Board value = orderMassCancelRequest.Board 证监会(4) Symbol public Utf8String12 Symbol value = orderMassCancelRequest.Symbol 编号SECODE(12)