罗技无线鼠标移动卡顿解决办法

最近发现无线鼠标无端出现卡顿情况,换成不同的鼠标还是一样。网上查询之后发现原来是受到USB3.0的无线干扰造成的,具体的可以查看果壳上的 http://www.guokr.com/post/338531/

解决办法:把鼠标的无线发射器插到远离USB3.0的端口,也可以利用USB延长线来增加它们的距离。

此外,如果你的USB接收器是插在机箱背面的话,建议换到前面板来,或者用USB延长线放到靠近鼠标的位置,这样减少了信号的损耗,也有一定的效果。

Fortran函数:子程序、函数——出自《Fortran 95 程序设计》 彭国伦

1.子程序subroutine的使用
program main

call sub1()

call sub2()

end program main

subroutine sub1()

end subroutine sub1

subroutine sub2()

end subroutine sub2

!子程序最后通常是return命令,返回调用它的地方,注意不是stop,如是stop则程序结束,结果难料。
!return可以省掉,可以出现在子程序的任何地方,提早返回。
exmaple:
subroutine message()
implicit none
write (*, *) “hello”
return
end  继续阅读

巧用word功能让你的SCI论文词汇更加高大上

很多人写文章的时候由于词汇量不够,所用的词汇都是非常简单的单词,让文章看起来不够高大上,巧用Word的一个功能可以让你的词汇一下子高大上起来。

例如,你在展示一张图片的时候,最简单的你会想到show,但是这个太口语化了,这时只要在这个单词上右键,菜单里面有个同义词(synonyms),就可以看到很多能够替代的单词选择illustration是不是要好得多了。 继续阅读

定语从句中 which\ that 的用法与区别

使用that的情况:

1.当先行词是nothing, something, anything, all, each等不定代词时。

e.g. Do you have anything that is important to tell me?

2.当先行词被all, any, some, no, not, every, each等修饰时。

e.g. I have some books that are very good.

3.当先行词被形容词最高级、序数词所修饰时。

e.g. This is the first book that I bought myself.

The biggest bird that I caught is this bird.
4.主句是以which或who开头的特殊疑问句时

e.g. Which is the bike that you lost?

Who is the woman that was praised at the meeting.

5.当先行词在从句和主句中都作表语时,无论先行词是人还是物.

China is no longer the country that she was.

6.如有两个定语从句,其中一个已用which引导,另一个宜用that .

Edison built up a factory which produced things that had never been seen before.

7.在there be句型中,只用that.

He asked for the latest book (that) there is on the subject.

8.当先行词被the very, the last, the next, the only 等词修饰时。

e.g. This is the very book that I lost yesterday.

9.当先行词又有人又有物时。

e.g. I won’t forget the things and the persons that I saw.

只能使用which的情况

1、非限制性定语从句中。

e.g. Mary has a book, which is very precious.

2、在介词之后。

e.g. This is a house in which lives an old man.

3、当主句中的主语被that修饰时。

e.g. That dog which I found in the street belongs to Mary.

 

from:http://zhidao.baidu.com/question/106209631.html