public static String removeBackQuotesIfNecessary(String measurement) {
    String unWrapped = measurement.substring(1, measurement.length() - 1);
    if (PathUtils.isRealNumber(unWrapped)
        || !TsFileConstant.IDENTIFIER_PATTERN.matcher(unWrapped).matches()) {
      return measurement;
    } else {
      return unWrapped;
    }
  }
Remove the back quotes of a measurement if necessary
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/utils/PathUtils.java