短語詞組短語backfill l material 回填物料;回填料compacted backfill material 壓實路基回填材料;壓縮回填材料;壓實回填材料paster like backfill material 似膏體充填binder backfill material 膠結(jié)充填材料application ofroadbase backfill material 路基回填應(yīng)用embankment backfill material 路堤回填材料light backfill material 輕質(zhì)回填材料unshrinkable backfill material 不收縮回填料pervious backfill material 透水性回填材料 返回 backfill material