Considering the large work quantity and tight time schedule for the curtain grouting in Bid I of Letan project, drilling speed is the most critical factor in the construction progress.
乐滩水电站I标工程帷幕灌浆工程量大，工期紧，影响施工速度的最大因素是钻孔速度。
Considering the large work quantity and tight time schedule for the curtain grouting in Bid I of Letan project, drilling speed is the most critical factor in the construction progress.
乐滩水电站I标工程帷幕灌浆工程量大，工期紧，影响施工速度的最大因素是钻孔速度。
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