For small gravel particles should not result in sand mud wrapped Micronesia and the blocking phenomenon in cold pipelines gravel gradation strict control strict admission related raw materials.
英
美
释义
对于因碎石颗粒偏小,宜造成砂子泥浆包裹不密,且堵寒管道的现象,严格控制碎石级配,严把原材料入场关。
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