Language:Chinese.paperback.Pub Date:2022-01-01.publisher:Shanghai Science and Technology Press.description:Paperback. Pub Date: 2022-01-01 Pages: 188 Publisher: In order to meet the ventilation needs of long-distance tunnels. Shanghai Science and Technology Press generally needs to set up interval air shafts. Re-starting construction technology. but under
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Vendeur : liu xing, Nanjing, JS, Chine
paperback. Etat : New. Language:Chinese.Paperback. Pub Date: 2022-01-01 Pages: 188 Publisher: In order to meet the ventilation needs of long-distance tunnels. Shanghai Science and Technology Press generally needs to set up interval air shafts. Re-starting construction technology. but under the condition of wind well facing the river and rich water. the reinforcement of the end well is affected. the construction space is limited. and the risk of arrival at the station and re-starting is extremely high. Nanjing Weisa. N° de réf. du vendeur NY041326
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