人口密度
人口密度是勒一個固定範圍內居住个人数。一般以每平方公里計算，伊是一個平均值。
例子：一笪10,000 km2地方有 200,000 人口；人口密度就是 20 / km2 即每平方公里有 20 個人。
人口密度是反映人口分佈顶顶常用个指標之一。適當拨人口密度喺良好个居住、衛生搭仔經濟條件之一。
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