“direction ratios”的概念、定义、翻译、参考文献-科学参考

单词	direction ratios
释义	direction ratios [di`rek·shǝn ´rā·shōz] See <<direction numbers>>
随便看	primary frequency primary-frequency standard primary front primary fuel cell primary geosyncline primary gneiss primary gneissic banding primary great circle primary growth primary gun primary haulage primary high explosive primary hydrogen atom primary hypertension primary index primary instrument primary interstice primary key primary knocked-on atom primary lateral sclerosis primary lead primary lesion primary lights primary low primary magma

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。