diff --git a/casic-metering-service/src/main/java/com/casic/missiles/service/Impl/eqpt/standard/impl/LowFrequencySignalHandler.java b/casic-metering-service/src/main/java/com/casic/missiles/service/Impl/eqpt/standard/impl/LowFrequencySignalHandler.java
index 8172cc9..f70b873 100644
--- a/casic-metering-service/src/main/java/com/casic/missiles/service/Impl/eqpt/standard/impl/LowFrequencySignalHandler.java
+++ b/casic-metering-service/src/main/java/com/casic/missiles/service/Impl/eqpt/standard/impl/LowFrequencySignalHandler.java
@@ -102,64 +102,64 @@
         Map<String, List<BizEquipmentStandardCheckDataLowFrequencySignal>> typeMap = request.getCheckDataLowFrequencySignalList().stream().collect(Collectors.groupingBy(BizEquipmentStandardCheckDataLowFrequencySignal::getCheckType));
         List<BizEquipmentStandardCheckDataLowFrequencySignal> repList = typeMap.get(REPEATABILITY);
         Map<String, List<BizEquipmentStandardCheckDataLowFrequencySignal>> repMap = repList.stream().collect(Collectors.groupingBy(BizEquipmentStandardCheckDataLowFrequencySignal::getParams));
-        if (!repMap.containsKey("1")) {
+        if (!repMap.containsKey(FREQUENCY_CN)) {
             addDataRemoveItem(dataItems, startIndex + 1, "频率");
         } else {
             map.put("zeroRepSeq", (repIndex++) + "、");
         }
-        if (!repMap.containsKey("2")) {
+        if (!repMap.containsKey(AC_VOLTAGE)) {
             addDataRemoveItem(dataItems, startIndex + 2, "交流电压");
         } else {
             map.put("firstRepSeq", (repIndex++) + "、");
         }
-        if (!repMap.containsKey("3")) {
+        if (!repMap.containsKey(DC_VOLTAGE)) {
             addDataRemoveItem(dataItems, startIndex + 3, "直流电压");
         } else {
             map.put("secondRepSeq", (repIndex++) + "、");
         }
-        if (!repMap.containsKey("4")) {
+        if (!repMap.containsKey(RISE_AND_FALL_TIME)) {
             addDataRemoveItem(dataItems, startIndex + 4, "上升时间");
         } else {
             map.put("thirdRepSeq", (repIndex++) + "、");
         }
-        if (!repMap.containsKey("5")) {
+        if (!repMap.containsKey(FLATNESS)) {
             addDataRemoveItem(dataItems, startIndex + 5, "平坦度");
         } else {
             map.put("fourthRepSeq", (repIndex++) + "、");
         }
-        if (!repMap.containsKey("6")) {
+        if (!repMap.containsKey(DISTORTION)) {
             addDataRemoveItem(dataItems, startIndex + 6, "失真");
         } else {
             map.put("fifthRepSeq", (repIndex++) + "、");
         }
         List<BizEquipmentStandardCheckDataLowFrequencySignal> staList = typeMap.get(STABILITY);
         Map<String, List<BizEquipmentStandardCheckDataLowFrequencySignal>> staMap = staList.stream().collect(Collectors.groupingBy(BizEquipmentStandardCheckDataLowFrequencySignal::getParams));
-        if (!staMap.containsKey("1")) {
+        if (!staMap.containsKey(FREQUENCY_CN)) {
             addDataRemoveItem(dataItems, startIndex + 7, "频率");
         } else {
             map.put("zeroStaSeq", (repIndex++) + "、");
         }
-        if (!staMap.containsKey("2")) {
+        if (!staMap.containsKey(AC_VOLTAGE)) {
             addDataRemoveItem(dataItems, startIndex + 8, "交流电压");
         } else {
             map.put("firstStaSeq", (repIndex++) + "、");
         }
-        if (!staMap.containsKey("3")) {
+        if (!staMap.containsKey(DC_VOLTAGE)) {
             addDataRemoveItem(dataItems, startIndex + 9, "直流电压");
         } else {
             map.put("secondStaSeq", (repIndex++) + "、");
         }
-        if (!staMap.containsKey("4")) {
+        if (!staMap.containsKey(RISE_AND_FALL_TIME)) {
             addDataRemoveItem(dataItems, startIndex + 10, "上升时间");
         } else {
             map.put("thirdStaSeq", (repIndex++) + "、");
         }
-        if (!staMap.containsKey("5")) {
+        if (!staMap.containsKey(FLATNESS)) {
             addDataRemoveItem(dataItems, startIndex + 11, "平坦度");
         } else {
             map.put("fourthStaSeq", (repIndex++) + "、");
         }
-        if (!staMap.containsKey("6")) {
+        if (!staMap.containsKey(DISTORTION)) {
             addDataRemoveItem(dataItems, startIndex + 12, "失真");
         } else {
             map.put("fifthStaSeq", (repIndex++) + "、");