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uuencode    
加码方法之一,能将二进位资料转换成ASCII的档案

加码方法之一,能将二进位资料转换成ASCII的档案

(Unix-to-Unix encode) A {Unix} program for
encoding {binary} data as {ASCII}. Uuencode was originally
used with {uucp} to transfer binary files over {serial lines}
which did not preserve the top bit of characters, but is now
used for sending binary files by {e-mail} and posting to
{Usenet} newsgroups etc. The program uudecode reverses the
effect of uuencode, recreating the original binary file
exactly.

Uuencoded data starts with a line of the form

begin

where is the files read/write/execute permissions as
three {octal} digits and is the name to be used when
recreating the binary data.

Uuencode repeatedly takes in a group of three bytes, adding
trailing zeros if there are less than three bytes left. These
24 bits are split into four groups of six which are treated as
numbers between 0 and 63. Decimal 32 is added to each number
and they are output as ASCII characters from 32 (space) to
3263 = 95 (underscore). Each group of sixty output
characters (corresponding to 45 input bytes) is output as a
separate line preceded by an 'M' (ASCII code 77 = 3245). At
the end of the input, if there are N output characters left
after the last group of sixty and N>0 then they will be
preceded by the character whose code is 32N. Finally, a line
containing just a single space is output, followed by one
containing just "end".

Sometimes each data line has an extra dummy character added to
avoid problems which mailers that strip trailing spaces.
These characters are ignored by uudecode.

Despite using this limited range of characters, there are
still some problems encountered when uuencoded data passes
through certain old computers. The worst offenders are
computers using non-ASCII character sets such as EBCDIC.

{Base 64} encoding is probably now more commonly used than
uuencode.

(2004-07-17)


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Uuencode查看　Uuencode　在百度字典中的解释百度英翻中〔查看〕
Uuencode查看　Uuencode　在Google字典中的解释Google英翻中〔查看〕
Uuencode查看　Uuencode　在Yahoo字典中的解释Yahoo英翻中〔查看〕

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  • Horsepower vs torque? Whats more important? : r cars - Reddit
    I've been researching about cars more and more lately, and while cars are my biggest hobby there's one thing I'm stuck on, and that's why horsepower us more important than torque, to performance
  • Why Do Horsepower And Torque Cross At 5,252 RPM? - Reddit
    For those that don't have time to watch; Horsepower = torque * RPM 5252 When RPM is at 5252, it cancels out the 5252 and you're left with horsepower = torque
  • How would it feel to accelerate with really high torque, but . . . - Reddit
    A high torque low horsepower engine would just be an incredibly powerful engine running at a very low rpm, like 2000 rpm (especially in your example with hp being 1 8 of the torque) For reference the average gasoline engine idles at about 800 rpm, high revving engines can idle closer to 1000 rpm
  • Torque and Horsepower Explained. . . For semi-idiots. : r cars
    TORQUE AND HORSEPOWER FOR SEMI-IDIOTS By Rex8499 Summary: In an effort to explain how torque and horsepower in cars are related, and what exactly those terms and numbers mean, and which feels faster, I’ve written this in hopes that semi-intelligent people might be able to get at least a rudimentary grasp of the concepts at play If you aren’t already familiar with how an engine works, you
  • Eli5: What is “torque” and “horsepower” in mechanics
    In the complex mechanics of a car engine, torque and horsepower are actually inter-related which is why this gets complicated But in theory when accelerating you'd want a lot of torque from the engine (strength to get the car moving) and when at full speed you'd want high horsepower (rapidly applying energy to keep the car fast) Reply reply Wabbitts •
  • Whats the difference between horsepower and torque? : r . . . - Reddit
    Torque is multiplied by the gear ratios, so in low gears torque at the wheels is much higher than crank torque If your 1st gear is 3:1 and final drive is 4:1, then in 1st gear torque at the wheels will be 12x the crank torque (and wheel rpm will be 1 12th the engine rpm)
  • Torque vs horsepower : r motorcycle - Reddit
    Torque is a direct measurement of twisting force Horsepower is not a direct measurement, but a calculation derived by multiplying the peak torque number by the rpm at which that peak torque is acheived, and then dividing the product of those two by 5252
  • Horsepower vs Torque? What makes a car more fun to drive?
    So curious to know from fellow car enthusiasts what are some factors (horsepower, torque, weight, features looks, transmission etc ) you look into when stating that a car is fun to drive
  • ELI5:If two engines have the same horsepower but one has 20% more . . .
    20% is just a random number I just mean, if you have two engines of the same family and one is smaller but turbocharged and theyre both rated at the same horsepower but different amounts of torque





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