词汇	backwashing period
释义	backwashing period 反冲洗周期
随便看	law of import law of incidence law of income distribution law of increase in size law of increase of entropy law of increasing cost law of increasing costs law of increasing marginal productivity law of increasing marginal returns law of increasing return law of increasing returns law of increasing specialization law of independence law of independence offorces law of independence of forces law of independent law of independent assortment law of independent ionic mobilities law of independent migration law of independent migration of ions law of independent propagation of light law of indestructibility law of indestructibility of matter law of indice law of indices