“penna”的概念、定义、翻译、参考文献-科学参考

单词	penna
释义	penna [`pen·ǝ] See <<contour feather>>
随便看	nitrogen cycle nitrogen dioxide nitrogen fixation nitrogen monoxide nitrogen mustard nitrogen narcosis nitrogenous base nitrogenous fertilizer nitrogen pentoxide nitrogen peroxide nitrogen sequence nitrogen solution nitrogen tetroxide nitrogen trifluoride nitrogen trioxide nitroglycerin nitroglycerin powder nitroguanidine nitromagnesite nitrometer nitromethane nitron nitronium nitroparaffin nitrophenide

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。