单词	天体测量法
释义	天体测量法astrometric method
随便看	first order dynamic logic first-order ecosystem first order efficiency first order equation first-order equation first order expression first order fission products first-order form first order functional calculus first-order instrument first order integral-differential equation first order interaction first order ionization potential first order kinetics first-order kinetics first-order lag first-order lag element first order language first order leveling first-order leveling first order levelling first order logic first-order logic first-order markov chain first order model