-
本发明地面操作安全,细微裂隙地层堵水效果好。
The chemical grouting material has safe surface operation, and has good water plugging effect on stratums with micro cracks.
youdao
-
本发明地面操作安全,细微裂隙地层堵水效果好。
The chemical grouting material has safe surface operation, and has good water plugging effect on stratums with micro cracks.
youdao