9月9日从杭集传来喜讯，总长度1180米的污水管道已成功从廖家沟河底穿过。
September 9 Hang set came from good news, the total length of 1180 meters of sewage pipelines have been successfully crossed from the Liao River Formation.
9月9日从杭集传来喜讯，总长度1180米的污水管道已成功从廖家沟河底穿过。
September 9 Hang set came from good news, the total length of 1180 meters of sewage pipelines have been successfully crossed from the Liao River Formation.
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