“placodontians”的概念、定义、翻译、参考文献-科学参考

单词	placodontians
释义	placodontians Encyclopedia 理学爬行纲（化石）释 placodontians楯齿龙类鳍龙类最原始的一个分支。
随便看	right-handed elliptically polarization right handed elliptically polarized light right-handed elliptically polarized light right-handed helix right-handed lower continuous right-handed polarization right-handed polarization, dextropolarization right handed polarized waves right-handed polarized waves right-handed reference frame right handed rotation right-handed rotation right-handed screw rule right-handed system right-handed trihedral right-handed upper continuous right-hand inclusion right-hand lower derivative right-hand lower limit right-hand parenthesis right hand rule right-hand rule right-hand screw rule right-hand side right-hand side problem

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