“bull wheel derrick”概念、定义、翻译-科学时代

单词	bull wheel derrick
释义	水利水电词汇手册 bull wheel derrick 转盘起重机
随便看	succession succession succession succession succession succession succession succession succession succession succession succession succession act successional dynamics successionary grassland succession by subrogation succession by testament succession duty succession duty succession duty succession of copyright succession of state succession planning succession planning succession planning system

科学时代收录了1160609条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

bull wheel derrick