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特厚沖積層凍結(jié)段快速掘砌施工技術(shù)

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本文重點(diǎn)闡述了采用凍結(jié)法安全、快速通過(guò)立井特厚沖積層施工技術(shù)。

FISHER直通閥

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www.Fisher.com Fisher r Sliding -Stem Valve Selection Guide Typical Fisher Sliding-Stem Control Valves W8861 W7957-2 easy -e?GX TBX STEAM CONDITIONING VALVE X0165 A broad range of Fisher valves, sizes, and materials is offered – fromNPS1/2 for general service to NPS20 and larger for demanding high -pressure steam, hydrocarbon, and noise services. FIELDVUE? digital valve controllers offer digital c

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