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| 2019, Vol. 56(3): 38-44 DOI: | ||
| Study on the Planning Technology for Metro Built by Double Shield TBM in Old Urban Area | ||
| （1 China Railway First Survey and Design Institute Group Ltd., Xi′an 710043；2 Shaanxi Key Laboratory of Railway and Underground Traffic Engineering, Xi′an 710043） | ||
| Received null Revised null | ||
| Supporting info | ||
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