Gravel multi-function impact test function of rapid specimens of loading and unloading and equipped with external extended grit boxes, convenient and practical.
砂砾多功能冲击试验机能快速进行试件的装卸并配有外置式的砂砾收集箱，方便实用。
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According to the research, the natural graded gravel is the best backfill material of graded crushed stone, grit, lime stabilized soil and rock chips.