刚度的变化和他的频率有什么关系

请问：librarians are testing the waters .请问：librarians are testing the waters to identify what present and future roles they may have in these developments; but these are early days,and it is still unclear what those roles may be.11 请以《你在我心中》为题,写一篇文章,600字左右,要自己写的,复制粘贴的就算了.现在就要，好的加分啊，拜托各位了！！！ How can you capture the wind on the waters testing the waters trip trip trip over one's own tongue 能给个例句吗? in the front of与in front of怎么使用? These shoes are small for me.改反意疑问句 a sperm whale is 35 tons.对35 tons提问 把这些中文翻译成英文1我看见我的床上有一条新裙子 2那棵高高的树上有一只小鸟 3桌子上放着一个生日蛋糕4我看见一只风筝在天上 5很多鱼在河里游 好的加分,速速滴! 树上有一只小鸟吗? 英语翻译 It is too heavy for us to move .这里的for us当句子的什么成份,能不能省略? 为什么等边三角形的内角是60度 The robbers ran away _______they caught sight of the pilice.请在空白中加入适当的连词 连词成句.1.experienced,on,China,they,and,a,the,saw,trip,lot,to(.) Why is it good _ (obey) school rules? divide和separate有什么区别? friends,her,is,name,jane.连词成句 you can always see or get a lots of new-ly-designed postcards什么意思 英语翻译 play the l can play the pipa.(改为一般疑问句)怎么做 C'est une grande jeune femme mince.这里的grande是什么意思,不是说放在后面是高的意思,放在前面是“伟大的”吗?这里只是简单的介绍而已,应该不是说伟大的啊. il ,elle est后面的职业名词 如果有形容词修饰 要加冠词吗 久英语怎么说 play the market是什么意思 the family settled in New York in1970 andhaslived there ever since 怎么翻译 about my views on a good school newspaper 英语作文 Can you ( ) my article ( ) the school newspaper?你能把我的文章刊登在校报上吗? 求一对英文情侣名