单词	古相岩
释义	古相岩palaeotypal rocks古相岩palaeotypal rock
随便看	frequency difference frequency difference multiplier frequency-direction spectrum frequency discount frequency discrimination frequency discrimination telegraph frequency discriminator frequency discrinimator frequency dispersion frequency distortion frequency distribution frequency distribution curve frequency distribution--frequency allocation frequency distribution function frequency distribution histogram frequency distribution table frequency diversity frequency diversity radar frequency diversity reception frequency diviation frequency divider frequency divider--frequency demultiplier frequency divider，fd frequency division frequency division command