2|n,5|n,(2,5)=1,10|n,7|n,(7,10)=1,70|n 证明，因为3|n，则n能被3整除，设n=3p 又因：7|n，则n能被7整除，设n=7q 所以有：3p=7q 因3、7都是质数，且互质，则，7Ip,3Iq 设p=7r,q=3s 则：n=3p=3*7r=21r，所以21In n=7q=7*3s=21s,所以21In 所以：21In ...
k+1) =[(k+1)lnk +1]/(k+1)=[lnk^(k+1) +ln e]/(k+1)=[ln e*k^(k+1)]/(k+1)=ln[(k+1次根号下e)*k] k+1次根号下e约等于1<ln(k+1)同理可证ln(k+1)<1+1/2+...+1/k综上所述1/2+1/3+...+1/n<INn<1+1/2+...+1/(1-n)对于任意的n属于N，...
二度とは帰れない nidotowakaerenai 场所 を 指しているよ basyo o sashiteiruyo ガラス の ティーンエイジ GARASU no TIINNSEIJI 时 の 波が toki no nimiga 壊していった 砂 の 城に kowashiteiita suna no shironi 光る 青春 の 破片 hikaru seisyun no hahenn 指 ...
1、一般情况下，转盘INN深沟球轴承套圈选用50Mn,但是有时为了满足特殊应用场合主机的需要选用42CrMo。2、转盘深沟球轴承的滚动体一般选用GCr15SiMn。3、保持器的型式有整体式、分段式、隔离块式等不同的结构型式。整体式或分段式保持器采用20#钢或ZL102铸造铝合金。隔离块式保持器采用聚酰胺1010树脂、ZL102...
-0│＜ε 所以，lim2^n/n!=0 求极限lim{n[In(n+2)-Inn]},n趋向于无穷 n→∞时，ln(n+2)-lnn=ln(1+2/n)等价于2/n，所以原极限＝lim n×2/n=2 高数极限证明 lim(1-n)/(1+n)=-1,n趋向于无穷大 对所有ε大于0-（1-n)/(1+n)+1小于ε 2/(1+n)小于ε n大于(...
地址：板泉路300号电话：021-58321888 981、782到灵岩南路下，沿灵岩南路向北走就看见招牌了。986、784到海阳路下，也能看到招牌。576区间车和796也到的，沿灵岩南路向南走300米。周围环境好到谈不上，只是没有工业污染罢了，离卢浦大桥很近。南面就是杨思中学，周围都是居民区，地段不算最好，但...
improvement n.改进,改善;改进处 in prep.在…里ad.进,入 inch n.英寸 incident n.发生的事;事件 incline n.斜坡 vt.使倾斜 include vt.包括,包含...injury n.损害,伤害;受伤处 ink n.墨水,油墨 inn n.小旅店;小酒店 inner a.内部的;内心的 innocent a.清白的,幼稚的 [NextPage] input n.输入;投入...
Without considering and ruling out other possible reasons why the band won the awards the chairperson cannot convince me of Schade's abilities or, in mm, that he should be appointed to the district job.in mm,怎么翻译?谢谢!!in my opinion, in mm means at least 展开 3...
laugh,smile,grin,chuckle,sneer laugh 指哈哈大笑 At that moment, everybody began to laugh and sing.这时候，大家开始又是笑又是唱。We all laughed to tears at his funny story.听了他的滑稽的故事，我们都笑出眼泪了。smile (名词：smile)指微笑 The inn-keeper smiled and immediately went...
Annie follows Sam.But while she is walking across the street,preparing to exchange a few words with him,Annie finds that Sam is with another woman.She does not know that woman is only a friend of his.Annie is shocked and motionless in the middle of the street.Sam catches sight of her....