filial 发表于 2025-3-25 05:43:50

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Torrid 发表于 2025-3-26 15:28:11

Economics of Trenchless Technology,Operators are faced with the difficult decision of determining when it is economical to use trenchless methods over conventional technology. Trenchless methods have been historically selected for the following reasons:

Bph773 发表于 2025-3-26 20:11:18

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查看完整版本: Titlebook: An Introduction to Trenchless Technology; Steven R. Kramer,William J. McDonald,James C. Thom Book 1992 Van Nostrand Reinhold 1992 Horizont