grout box
... group well 群井 grout box 灌浆盒 grout curtain 灌浆帷幕 ...
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万家寨水利枢纽大坝接缝灌浆系统采用预埋管路和出浆盒方式。
A method of embedded pipe and outlet box was adopted in the joint grouting system of Wanjiazhaidam.
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