“director hammer percussion”的概念、定义、翻译、参考文献-科学参考

单词	director hammer percussion
释义	director hammer percussion Encyclopedia 历史学旧石器时代考古释 director hammer percussion锤击法旧石器时代最为普遍的生产和修理石制品的方法，直接锤击目标以修型或剥片。
随便看	dual-phase steel dual photometer dual point dual-polarization dual polarization weather radar dual polarized radar dual polyhedron dual-porosity medium dual poset dual predictable projection dual principal ideal dual principle dual problem dual process dual processing theory dual program dual programming dual projection dual projective line dual projectivity dual proposition dual propositions dual purpose bamboo forest dual-purpose Cattle dual-purpose exploratory well

科学参考收录了854744条科技类词条，基本涵盖了常见科技类参考文献及英语词汇的翻译，是科学学习和研究的有利工具。