人口普查词汇表
internal migration
migration ratemigrantimmigrationemigrationmigrationsampling errordate of birthplace of birthvital registrationquestionairerespondentcensus enumeratorrandom samplingsampling surveypopulation censussex ratiorejuvenation of populationaging of populationexpectation of lifecohortsage groupage structureage-sex compositionvital statisticsvital indexaverage annual rate of growthannual growth rateZPG (zero population growth)NPG (negative population growth)natural growthaverage length of lifemean age at deathcause-specific death ratesex-age-specific death rateinfant mortality rategeneral mortality ratemortality ratemortalitybirth peaksstillbirthlife birthpremature birthparitybirthsnatality ratebirth ratefecundityfertilitynatality