The west to east gas transportation pipe engineering is one of the four important programs of our country during the 10th Five Years Plan period. The fifth segment, which passes through six counties and two provinces from west to east,is 391.9 km in length. Along the west to east gastransportation pipe engineering, the physiognomy is very complex. There are many railways, highways, aqueducts and rivers that can result in serious influence such as the loss of soil and water on the environment. Measures m...
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