常見(jiàn)例句雙語(yǔ)例句First, soil erosion modulus can be estimated by using water erosion model, and the maps of soil density and soil horizon thickness can be derived from soil detailed survey data.首先，採(cǎi)用侵蝕預(yù)報(bào)的數(shù)學(xué)模型來(lái)估算土壤侵蝕量，用土壤詳查資料編制土層厚度和土壤容重圖； 返回 detailed soil survey