...This led Euler to write a valuable essay disclosing a newmethod of computing perturbations, called the instantaneous ellipse withvariable elements...
George Forbes 「History of Astronomy」
...—The Century Dictionary defines chronologyas "the science of time"—that is, "the method ofmeasuring or computing time by regular divisions or periodsaccording to the revolutions of the sun or moon...
George C. Comstock 「A Text-Book of Astronomy」
ランダム例文:
adolescence comb prevents
便利!手書き漢字入力検索