change - 添加注释

os-ems/src/main/java/com/os/ems/record/service/impl/EmsRecordSteamInstantServiceImpl.java

@@ -95,7 +95,7 @@ public class EmsRecordSteamInstantServiceImpl implements IEmsRecordSteamInstantS
     @Override
     public List<EmsRecordSteamInstant> selectEmsRecordLatestSteamInstantList(EmsRecordSteamInstant emsRecordSteamInstant){
 /*        return emsRecordSteamInstantMapper.selectEmsRecordLatestSteamInstantList(emsRecordSteamInstant);*/
-        //只返回第一条数据
+        //只返回第一条数据,subList从索引0开始，只截取1条
         return emsRecordSteamInstantMapper.selectEmsRecordSteamInstantList(emsRecordSteamInstant).subList(0,1);
     }
 }