n.水準(zhǔn)測(cè)量；平整；均勻化

動(dòng)詞level的現(xiàn)在分詞.

He was busy leveling the ground and laying turves. 他正忙于平整土地鋪草皮。

Extensive land leveling is often required because the topography must be smoother than for furrow irrigation. 由于畦灌的地形必須比溝灌的平坦，因此，常常需要大面積平整土地。

再平層

n.自動(dòng)找平