“primitive achondrites”的概念、定义、翻译、参考文献-科学参考

单词	primitive achondrites
释义	primitive achondrites Encyclopedia 理学无球粒陨石释 primitive achondrites原始无球粒陨石具有类似球粒陨石的矿物组合与化学成分但不具备球粒结构的陨石。
随便看	directed path directed plane directed point set directed quantity directed quasiorder directed relation graph directed segment directed self-assembly lithography technology directed sequencing directed set directed spanning tree directed strongly regular graph directed system directed technical change directed tetrahedron directed the security work of large-scale activities directed tree directed triple system directed union directed value directed web directed xy walk directed xy-walk direct effect direct effects hypothesis

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