“筭數書”的意思、由来-开放百科全书

词条	筭數書
释义	> Book on Numbers and Computation {{R from alternative language\|zh}}
随便看	Planetary machines, an historical account of Planetary magnetic field Planetary-mass brown dwarf Planetary Nebula Planetary Nebula M2-9 Planetary nomad Planetary nomads Planetary object Planetary objects proposed in religion, astrology and ufology Planetary orphan Planetary Phase of Civilization Planetary protection policy Planetary Resources Planetary ring Planetary science Planetary Science Decadal Survey Planetary Sciences Planetary Sit-In Planetary surface Planetary System Science Planetary systems in fiction Planetary Transits and Oscillations of stars Planetary Traveler Planetary Unknown Planetary wave resonance

开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。