某彈簧原長10cm，若它受到20N的拉力作用時變成12cm．a則彈簧的頸度數為多少

英文14怎么说?这个数数类的英文忘了, 数数用英语怎么说 北灰什么意思 萧敬腾有一只猫咪叫北灰. 连接暖气片的管可以PB管吗,支管埋地用的是PB管,出地面连接散热器时可以用PB管吗,还是必须用钢管 相思无益,十诫说与君知 什么意思? 数数一词怎么读 英语数数,100之后怎么读?昨天晚上失眠,数数早就无效了,于是想到用英语数数,数到100不会数了.101、102.是读 “one hundred and one、one hundred and two." 还是读 “one o one、one o two.”然后,1000之后怎么 急:英译中:You'll never sell any product as important as yourself,so you want to do it right. 模具工程:英译中We will want a pull ahead cavity for approval prior to final tool build and ship.好象都不对! 求几首英语诗歌,必须要有关于道歉,致歉的.越短越好.适合朗读的.要参加英语比赛. Now tick the cards you have. 雅思听力,基本都能听懂,但是很如果一段对话要回答好多问题就很难集中注意力,怎么办? short-circuiting He was short-circuiting. 麻烦将下面一句话翻译成英文 你能举出采用逆向思维的例子吗? 看不太懂.词虽极工致,然多杂以鄙语,故流俗人尤喜道之. 有一句话读不太懂,不太懂这句话…”因为爱的本质,就是爱这种行为本身.” I want to know what love is enterprise 英语翻译When my friend Jason visited from England he was shocked by the size of food portions at places where we dined下面的不理解visited from England food portions 细翎的意思是什么 我只是想知道那个字表示什么 会翎是什么意思 鹰翎什么意思 restraint和constraint的区别是什么呀,who can tell me,i express my thanks prior to ur answer. 哪首歌有"love are make from you and me"系颖欣嘅节目播过咖. Do you want to be a great leader when you grow up? 今天做到一张变态卷.do you think you room is bigger than hers?A.I DONT THINK SO B.NO I DONT THINK SO其他的都排除了. If you want to （ ）（ ） what happened last night,you can call to Mr.GreenIf you want to （ ）（ ） what happened last night,you can call to Mr.Green 如果你想了解昨晚发生了什么,你可以给格林先生打电话 那两个空应 下雨对雾霾现象有影响吗? 为什么会造成雾霾这种现象 I am looking for the missing glass-shoes who has picked it up.