多年冻土区天然气管道建设关键技术
Key techniques for building of natural gas pipelines in permafrost regions
多年冻土区天然气管道建设关键技术 |
| 李欣泽, 金会军 |
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Key techniques for building of natural gas pipelines in permafrost regions |
| Xinze LI, Huijun JIN |
| 图4 履带式推雪车 |
| Fig.4 Track bulldozer |
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