How to download the Chrome extensions CRX file

1.Get the extensions ID,Such as “Chinese Tutor ” web url is”https://chrome.google.com/webstore/detail/egbbefchlgcnhjoncjebmkffamidfhae”

the Plugin ID is the back code of the “…/detail/”,so ID= “egbbefchlgcnhjoncjebmkffamidfhae”

2.the extentsions derectly download url is “https://clients2.google.com/service/update2/crx?response=redirect&x=id%3D_____%26uc
you can replace the “_____”as the extensions ID,
so the url is like this:https://clients2.google.com/service/update2/crx?response=redirect&x=id%3Degbbefchlgcnhjoncjebmkffamidfhae%26uc,
then copy this url to other browwer,such as Firefox,Opera,or IE.later you could download the xxx.crx file.

3.Install to Chrome,you can drag it to Chrome.

怎样看色标电阻的阻值

四环表示法(普通电阻):
自左向右顺序:第一位数、第二位数、乘数(10的几次幂)、误差。

五环表示法(精密电阻):
自左向右顺序:第一位数、第二位数、第三位数、乘数(10的几次幂)、误差。

有效数表示:

绿
1 2 3 4 5 6 7 8 9 0

乘数表示(10的几次幂):

绿
1 2 3 4 5 6 7 8 9 0 -1 -2

误差数表示(%):

绿 无色
±1% ±2% ±0.5% ±0.2% ±0.1% ±5% ±10% ±20%

例:

1 8 10的2次幂 ±5%

标称电阻值为1800欧姆,允许误差为百±5%。

例:

绿
1 7 5 10的-2次幂 ±1%

标称电阻值为1.75欧姆,允许误差为±1%。