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一种用于绿色混凝土施工的装置

Release Time:2019-10-12  Hits:

First Author: 贾金青

Disigner of the Invention: 王美华,高仁哲,刘伟,封硕

Application Number: CN201720790025.5

Authorization Date: 2017-07-03

Authorization Number: CN207063542U

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