“Alleghenian”的概念、定义、翻译、参考文献-科学参考

单词	Alleghenian
释义	Alleghenian [¦al·ǝ¦gān·ē·ǝn] ^GEOLOGY Lower Middle Pennsylvanian geologic time.
随便看	impact cast impact crater impact crusher impact energy impact excitation impact extrusion impact force impact forging impact fuse impact grinding impaction impact ionization impactite impact law impact load impact loss impact mark impact microphone impact mill impact modifier impact-noise analyzer impactometer impactor impact parameter impact predictor

科学参考收录了103327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。