Therefore, Beijing should initiate the construction of the second long-distance pipeline immediately.
因此北京必须立即着手引进第二条长输管线。
Bends are the important parts in the long distance pipeline of oil and gas.
弯管是长距离油气输送管道的重要组成部分。
The anticorrosion quality of long distance pipeline has direct effect on its service life.
长输管道的防腐质量直接影响管线的使用寿命。
The anticorrosion quality of long distance pipeline has direct effect on its service life.
长输管道的防腐质量直接影响管线的使用寿命。
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