“alternation activity”的概念、定义、翻译、参考文献-科学参考

单词	alternation activity
释义	alternation activity 择一活动
随便看	main slant main slide valve mains lighting supply main slope main-slope engineer mains medium frequency induction heating equipment main smithy main soil group main soil type main solenoid mains-operated instrument main source main source of electric power main span main specifications main speed main speed reduction box main spindle box main spindle hand feed main spindle head main spindle quill main split main spot mains power supply mainspring

科学参考收录了1248194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。