“倒带”什么意思啊

解题思路：主动轮转速是恒定的，从动轮的转速与带子的运行速度v和从动轮的半径有关，随着主动轮上带子的厚度增加，v变大，且从动轮的带子减少，半径变小，所以从动轮的转速加快．

主动轮转动速度恒定，A恒定．随着卷绕录音带的增加，a轮的半径增大，带动的录音带运动的速度加快，v变大，b轮的半径变小，b轮转动变快．即A恒定，v变大，B变大．
故选A．

点评：
本题考点： 轮轴及其他常见简单机械．

考点点评： 解决此题关键是搞清主动轮和从动轮的区别，能够判断出主动轮的转速不变，且其半径的大小变化是解决此题的关键．

　　您好!
　　倒带--rewind.
　　如果是那首歌曲《倒带》,我也给您翻译一下--
　　我受够了等待,你所谓的安排I was tired of what you have planned
　　说的为来到底多久才来and how soon will your promise come true?
　　总是要来不及才知道我可爱you didn’t realized I was pretty before I left you
　　我想依赖却你都不在I wanted to find one to rely on but you didn’t by my side.
　　应该开心的地带in the place where our two should be happy,
　　你给的全是空白you didn’t give me some romantic memories
　　一个人假日发呆找不到人陪我看海 I couldn’t do things in holidays because no one would come to the beach with me.
　　我在幸福的门外却一直都进不来the heaven kept me out of its door so i couldn’t get in it for a long time.
　　你累积给的伤害我是真的很难释怀and your words hurted me deeply.
　　终于看开爱回不来, 而你总是太晚明白I finally found out that my love won’t come back. but you realized it too late
　　最后才把话说开,哭着求我留下来and when you finally could say it to me at last ,to my surprise , you held my hands and asked me not to leave you alone.
　　终于看开爱回不来我们面前太多阻碍I finally found out that my love won’t come back. because there are too many difficulties between us.
　　你的手却放不开,宁愿没出息求我别离开you hold my hands to make me stay here though you are a man .
　　你总是要我乖,慢慢计划将来you always told me to be little dear. You thought about the future quietly. 我的眼泪却一直掉下来my tears fell down by itself because of your expressions
　　过去怎么交代 你该给的信赖 how would you explain your behaviors and did you take up your duties?
　　被你亲手缓缓推入悬崖 I was so sad because of your attitude to our love.
　　看我脸上的苍白,看到记忆慢下来my face turned gray, and I found what the real one is
　　过去甜蜜在倒带I thought about the happiness in the past years.
　　只是感觉已经不在but this kind of feeling has gone for ever.
　　而我对你的期待,被我一次次摔坏my except has been destroyed madly.
　　已经碎成太多块,要怎么拼凑跟重来it has been many pieces and many bits
　　How would I tell what is it?!
　　终于看开爱回不来而你总是太晚明白I finally found out that my love won’t come back but you seldom realized it in time.
　　最后才把话说开哭着求我留下来and when you finally could say it to me at last. you asked me not leave you alone with crying
　　终于看开爱回不来我们面前太多阻碍I finally found out that my love won’t come back. because there are too many difficulties between us
　　你的手却放不开宁愿没出息求我别离开you hold my hands to make me stay here though you are a man to me.
　　.希望您满意.

雨,沙沙地响....你那矫健的身影已被淋得湿漉漉的,而我,却在远处看着你,虽然有种想上前替你撑伞的冲动,但却无动于衷,因为...害怕........每次看见你经过,都会情不自禁地回过头,看着你的背影傻笑...静静地望着你,对我来说就是一种幸福,我宁愿当离你身边最远的星星,静静地看着你,偶尔存有一点点的幻想让我渐渐为你着迷....小小的我不能有足够的勇气向你告白..因为害怕迎来的是凛冽的寒风,与你对视,心中的小鹿就会开始“活跃”促使我会不经意地瞟开,害怕你会在我的眼里看出些什么....当看见你有了她,心中像无数的小虫在吞噬我的心,你对她是那么的温柔,偶尔还会看见一丝深情,我尽力地伪装自己,自嘲着:不在乎,他又不属于你,不在乎....但真的不在乎吗?不,我在乎,非常的在乎...每次都会以泪洗面,真的好痛..单恋真的很辛苦,在你快乐时,也不会注意到在他周围泪流满面的一颗微小的星星吧....既然她是你的她,那我是什么,..是啊,我是什么...什么也不是......而已.....秋风吹着我的脸...回忆开始播放,如果..时间可以倒流,我真的宁愿在远处这样静静地望着他...真的...但如今..什么也没有了...只是我的回忆开始倒带播放,真的只是.....倒带.....我所能做的,只有静静地凝望着你,只到繁花凋谢.....

四声
和：倒（dào）车 读音一样

我自己议的
I have had enough of waiting for your so-called arrangement
How long how long to come in the end
You always want me to behave slowly plan for the future
I would like to rely on but you are not in the
Zone should be happy
You give all of which are blank
A person can not find Renpei holiday a daze I see the sea
I think you should be aware that they have been unable to enter
You say to me hurt me is really hard to forget even
* Love * not return at last to take things too many obstacles before us,
But can not relax your hands crying and begged me to stay
Finally take things too many obstacles before us love will never come back
But can not relax your hands and begged me not to leave rather unpromising
You always want me to behave slowly plan for the future
To say how long the future in the end come
How to arrange the past,you should trust
My tears have been falling
Look at my pale face that slow down memory
In the past,Sweet rewind
Just feeling no longer
Over the past you have to expect from me again and again broke
Were in pieces and how many pieces to put together with the weight to
Finally take things too late Love will never come back and you are always aware
Last minute words cried and begged me to stay open
Finally take things too many obstacles before us love will never come back
But can not relax your hands and begged me not to leave rather unpromising
woo ...
* Finally take things love will never come back * And you are always too late to understand
Last minute words cried and begged me to stay open
Finally take things too many obstacles before us love will never come back
But can not relax your hands and begged me not to leave rather unpromising
Leave ...
Lala ...
Bid farewell to the love of the past
And begged me not to leave

原因如下：
被吸到带电体上的纸屑,原先纸屑不带电荷,接触带电体后,纸屑上也带上了也带电体相同种类的电荷,因为,同种电荷互相排斥,因此,被吸到带电体上的纸屑,很快即被弹开.

时光的流失,是我们无法抗拒的,时间在走,人也在不停的长大,渐渐的成熟起来,回忆里自然有很多事情无法忘记,但我们必须放下,不要在乎过去,因为过去的事,过去的人再也回不来.人生就是一列开往坟墓的列车,路途上会有很多站口,没有一个人可以至始至终陪着你走完,你会看到来来往往、上上下下的人.如果幸运,会有人陪你走过一段,当这个人要下车的时候,即使不舍,也该心存感激,然后挥手道别,因为,说不定下一站会有另外一个人会陪你走的更远.” 记住人永远活在当下,不是活在过去.

倒带，再回首，唯有思念在心间回旋。回想曾经你我的相视大笑，回想曾经你我的烂漫稚气。而现在，彼此都多了份成熟。那属于我们的曾经何时再回来。你是否还能想起，我们的小说没有写完，我们的歌还没有谱好。----闺蜜，我想你回想你曾经的唠叨啰嗦和呢喃。那天，你生气了。你拿棍子敲桌子--棍子断了。你依旧啰嗦着，我们打着瞌睡听你念经。你说完了，我们睡醒了。。边玩边听你讲课，是一种轻松。----老师，我想你回想那曾记的“患难与共”。记得，几位同学没有写完作业，你狠心让我们去跑步。而你却也在后面跑步。班长去追你，你说：是你没有尽好责任，也应该受罚。依旧跑着。我们跟你一起跑，你让我们回去，我们不肯。----难友，我想你站在寂静的大街上，我奔跑，我嚎叫，。可，过去依然回不来。只剩下声声哀叹。曾经的曾经的那个你，那个我。已经人间蒸发。现在，长大了静静的享受着这撕心裂肺的思念，毕竟过去的回不来。虽然有时生活不是自己所期盼，但也要让自己把它过的有姿有味。因为，有你们。初二:安文翛

这个计算很麻烦,我们的产品精度要求比较高,倒角都是用CAD画出来很准的.你画好产品图再画你的刀尖圆弧然后拉出尺寸就可以了.你这个我画了一个数据出来了,我编出来你看看.G99G0X(100-1.838*2)Z2.G1Z0.F0.2X100.Z-3.184X101.Z-4.Z30.

设一天中,甲船到达的时刻为x,乙船到达的时刻为y
总的事件对应x,y∈〔0,24〕
在平面上对应区域为一面积为24^2的正方形区域
目标事件发生,则为｜x-y|≤6（两船到达的时间差小于6,则另一船必须等待.
同样在平面标出区域,即－6≤x-y≤6,区域是夹在两条平行线x-y=±6间的带状区域,然后结合图像,算一下目标事件对应区域面积与总的区域面积之比,就是
7/16了.