“铸铁管”概念、定义、翻译-科学时代

单词	铸铁管
释义	请查阅生铁管--铸铁管
随便看	activity concentration activity cost activity cost activity curriculum activity curve activity curve activity curve activity cycle activity decay activity decay activity decay curve activity definition activity department activity-dependent reinforcement mechanism activity description activity diaries survey activity driver activity duration activity elaboration activity energy activity energy activity factor activity indicator activity inventory activity learning

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。