新增单位水头损失属性；新增样式分级属性

src/app/OlMap/MapComponent.tsx

@@ -294,6 +294,7 @@ const MapComponent: React.FC<MapComponentProps> = ({ children }) => {
       properties: [
         // { name: "需求量", value: "demand" },
         { name: "高程", value: "elevation" },
+        // 计算属性
         { name: "实际需求量", value: "actualdemand" },
         { name: "水头", value: "head" },
         { name: "压力", value: "pressure" },
@@ -315,10 +316,11 @@ const MapComponent: React.FC<MapComponentProps> = ({ children }) => {
         { name: "管径", value: "diameter" },
         // { name: "粗糙度", value: "roughness" },
         // { name: "局部损失", value: "minor_loss" },
+        // 计算属性
         { name: "流量", value: "flow" },
         { name: "摩阻系数", value: "friction" },
         { name: "水头损失", value: "headloss" },
-        { name: "单位水头损失", value: "headlossPerKM" },
+        { name: "单位水头损失", value: "unit_headloss" },
         { name: "水质", value: "quality" },
         { name: "反应速率", value: "reaction" },
         { name: "设置值", value: "setting" },