回填土 meaning in English

back filling soil
backfilling
backfilled earth
earth backing

The water mains had numerous breaks, with the great majority of the breaks occuring in sand, silt, or filled ground .
自来水干线有许多处破裂，但绝大多数的破裂发生在砂地，淤泥地或回填土中。
Experimental research on the steady state of completely decomposed granite fills
风化碎石回填土的稳定性试验研究
Foundation pillar damage by horizontal pressure of backfill and precaution
回填土的侧向压力对基础柱的破坏及其预防
On application of power plant ' s fly ash in improving backfill ' s mechanical property
电厂粉煤灰改良回填土力学性能的研究
Tamped compacted backfill
夯实回填土

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