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沙架漏水因有一定高度常溅出盆外,如果带有混水便会影响测验的质量。在滤沙架下系细线一根,水即缘线流下不致溅出。(绥德水文姑)
Sand rack leakage due to a certain height often splashed out of the basin, if mixed with water will affect the quality of the test. Under the filter sand frame a thin line, the water that is flowing edge will not spill. (Suide Hydrographic Guns)