... 沉淀（素）原 {免疫} precipitinogen 沉淀圆锥 precipitation cone 沉淀柱 column precipitator ...
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local precipitation ray cone 局部射线锥
Head for the formation of this precipitation cone of depression around foundation soil on the impact of research is also an important issue.
针对这种降水形成的水头降落漏斗对基坑周边土体产生影响的研究也是一重要课题。
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