《Tetrabiblos》The Degree AscendingClaudius Ptolemy（Ashmand 英譯 1822）
D. 490), that there was also a clepsydra in special use as an astrological engine. [114] “_The Doctrine of Ascensions_,” in allusion to the method of calculating the actual position of the ecliptic.
段落 tetra-3-thedegreea-11public-domain (Ashmand 1822)
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