而浓度低值点一般位于河北省北部包括张家口和承德北部地区以及山东西北部的冲积平原地带。
The sampling sites with relatively lower PAHs concentrations were from north mountainous area of Hebei and alluvial plain of northwestern Shandong.
具有历史意义的承德避暑山庄在河北省，位于北京的东北方向250公里处。
The historic mountain resort of Chengde is in Hebei province, 250km northeast of Beijing.
承德避暑山庄，又称“热河行宫”，座落于中国北部河北省承德市中心以北的狭长谷地上，占地面积584公顷。
Chengde Summer Resort (CSR), or Rehe Inspection Palace, lies in a long, narrow valley in the north of Chengde City, Hebei Province in the north of China and covers an area of 584 hectares.
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