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| 2019, Vol. 56(3): 206-211 DOI: | ||
| Application of Innovative Waterproof Board Laying Trolley in the Beitaizi Tunnel | ||
| (1 The Fourth Engineering Co., Ltd. of China Railway First Group Co., Ltd., Xianyang 712000；2 China Railway First Group Co., Ltd.,Xi′an 710054) | ||
| Received null Revised null | ||
| Supporting info | ||
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