Supporting prefabricated type reinforced concrete sump pit of benzvalene form interface of utility tunnel
The utility model relates to a municipal administration engineering comprehensive piping lane technical field, the utility model discloses a supporting prefabricated type reinforced concrete sump pitof benzvalene form interface of utility tunnel, the keep (shenglvehao)at a certain distance away has...
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Format: | Patent |
Sprache: | chi ; eng |
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