单词	Yuxian coalfield
释义	Yuxian coalfield 蔚县煤田
随便看	population distribution and policy population distribution characteristics population distribution function population-distribution model population distribution pattern population distribution patterns Population Distributions population divergence population diversity population dividend population dividend or population problem Population Dividend or Population Problem? population division Population dosage population dose population doubling population doubling level population doubling time population drift population driving factor population driving force population driving forces population dynamic Population dynamical system population dynamics