“precession in right ascension”的概念、定义、翻译、参考文献-科学参考

单词	precession in right ascension
释义	precession in right ascension Astronomy precession in right ascension赤经岁差
随便看	porosity of powder metallurgy materials porosity of soil porosity point porosity, void fraction porospore porous porous absorption porous asphalt pavement porous barrier porous cement porous ceramic membrane porous ceramics porous diffusor blow-down silencer porous electrode porous fence porous flow resistance porous layer open tubular column porous layer open tubular (PLOT) column porous material porous media porous media model porous medium equation porous medium equations porous membrane porousmetal

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