数学问题,英文的,和revolution有关A gear is driven by a chain that travels 2.5 m per second. Find the radius of the gear if it makes 4π revolutions per minute.

数学问题,英文的,和revolution有关A gear is driven by a chain that travels 2.5 m per second. Find the radius of the gear if it makes 4π revolutions per minute. 关于二次工业革命和世界大战的问题!What kind of changes took place during the second industrial revolution?二次工业革命发生了哪些改变?Which country led Second In Industrial revolution 哪个国家导致了二次工业革命 revolution的形容词形式? revolution revolution benjamin franklin的英文生平介绍尤其是在American Revolution中扮演的角色 cnblue的love revolution（英文）铃声 （从i want you in my life...开始） As省略的问题It was considered a revolution中是不是省略了as? reform与revolution的区别 Palace revolution 的中文意思 revolution的动词怎么拼写 changes that the Industrial Revolution brought to environment,art,lives of women and children.工业革命前后（包括现在）：环境,艺术,妇女和儿童的影响!过今天不给分,急.最好是英文.thanks!写论文用! innovation和revolution有什么分别 what was the industrial revolution what was the industrial revolution 用英文怎么回答？ 数学术语名词Surface Area of Revolution RT第一时间 答对的算对翻译需要是旋转面积么 数学和英语的英文怎么写 数学和英语的英文怎么写 求英文和数学挺好的,