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, 2008
1.
2. -
3.
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, - -, , , .
, -, Prompt, TeX, . , , , .
. ( ). , -. , Translation Memory, [].
, Perl . . :
1. , , , . ., .
2. (British English American) .
3. , . , Perl, Python , ( Perl ).
4. .
1.
(). , , . , .
, . . .
| () | , | ||
| foot (ft) | 0,3048 | 0,3048 | |
|
foot square (ft2) |
0,3048 × 0,3048 |
0,0929 2 |
|
|
cubic foot (ft3) |
0,30483 = 28,317 × 10-3 |
28,317 × 10-3 3 |
|
|
pound of mass (lbm) |
0,4536 | 0,4536 | |
| second (s) | 1 | , | |
|
pound of force (lbf) |
4,448 | 4, 448 | |
| f/s | 0,3048/1 = 0,3048 | 0,3048 / | |
|
lbf x ft |
4,448 × 0,348 = 1,356 | 1,356 | |
|
lbf/in2 (psi) |
4,448/(0,0254)2 = 6895 |
6895 /2 |
, , 980 psi. 6,757 (: 6895 × 980 /2 = 6757100 /2 6,757 ).
, . . , , , , , , , . ( ). , (.. /2), /2 = /2, /2, . (), ( ), ( 100 ), , .
. Ut, h.p./in3/min. , (h.p./in3):min h.p.(in3/min).
, : h.p. , .. ; in3, (.. , ); , . , (h.p./in3)min, h.p.min/in3.
, , :
As an example, if l = 35 deg, T1= 520 deg, approach = 16.5 deg, then P = 0.47 and ψ = 4.9.
I , T1 , a approach . , , , ?
, , T1. T1 ( , , 16,5), , , , 520F (.. 271), 100., c, , T1 .
( ):
520 = 520 273 = 247 > 100,
, . : 520R = 520 × 0,555273 = 16. , , , , , .. .
, . , :
da/dn= 1.4210-13(Δ)2.02.
[in];
[cycle];
da/dn [in/cycle];
[psi√in] = (lb/in2)in1/2;
∆ ( ) ( , ).
1,4210-13 , . - .
:
) D () :
da/dn = D(∆K)α,
α = 2,02 .
) D ( D , , , , α):
D = inin2α /(cyclelbαinα/2) = in1+2α-α/2 /(cyclelbα) = in 1+3/2α / cyclelbα.
) , α :
= 25,4 1+3/22,02 / 0,454 2,02 = 25,4 4,03 / 0,454 2,02.
) 25,4 0,454 , , :
lg 25,4 4,03 = 4,03lg 25,4 = 4,031,4048 = 5,661
( 5,661) 458100.
lg 0,454 2,02 = 2,02lg 0,454 = 2,021,6571 = 2,02 (0,3429) = 0,6926 = 1,3074
[ 1].
( 1,3074) 0,2030.
= 458100: 0,203 = 2,25106.
) :
D' = D = 1, 4210-132, 25106 = 3,19510-7 .
) :
da/dn = 3,19510-7 (Δ)2,02.
, , . , . , , , , , . .
:
|
μ |
micro |
10-6 |
|
|
m |
milli |
10-3 |
|
|
k |
kilo |
103 |
|
|
M |
mega |
106 |
|
|
G |
giga |
109 |
: $3G = 3 . .
1.5 Gbbls = 1,5 .
, m , :
|
106 |
Pressure of 230 | 230 (230 ) | |
| ; mt |
106 |
A throughput of 12 /yr (250,000 bbls/day). | 12 (250 000 ) |
| $M |
106 |
Values shown in $2001M | . 2001 |
| M |
103 (*) |
$755M×5 = $3.775 MM Oil Production = 70, OOO MBbl 500 MCF = 500 mille cubic feet; 2 MCFCD = 2 mille cubic feet per calendar day |
755 . . × 5 = 3,775 . . = 70 000 103 500 2 |
| MM |
106 |
1.7 MMTPY Cracking Unit CAPEX 800 $MM |
- 1,7 . / = 800 106 |
| m |
I06 |
The estimated cost of the installation is $5.2 m $500m 20 mcps = 20 megacycles per second |
5,2 . . 500 . . 20 |
| m |
mil = 10-3 in |
Corrosion rate was 4 mpy | (4×25,4) / |
| metric tonne** | 150 MT of propellant per week | 150 |
:
(., , - , ..) , , a . , , . .
: , . , . freight ton = 40 (.. ); register ton = 100 (.. - ); standard ton = 3,517 ( ); ton = 4,18 ( , ). , , ; (metric ton = mton = 1000 ), (short ton = just ton = net ton = 2000 = 907 ) (long ton = gross ton = 2240 = 1016 ).
2. -
, , -. , , . : , , , . . . ( . .' . ., 1973, . 121-131), , , - . - . , ( ) .
I. , ( , . , , .). - .
The annealed hardness of the material does not provide as good a correlation with the measured erosion wear.
, , . , , ( (the annealed hardness > he annealed surface hardness = the hardness of the annealed surface) .
.
II. , .
The James [2] and Smith [3] correlations show essentially the same predictive reliability, and are somewhat poorer than Murdock.
, , "than Murdock correlation", "than that of Murdock", "than Murdock's one" "than Murdock".
, , .
[2] [3] , .
III. II -, .
Fig. 5 shows the results of these tests, the upper curve being the large protrusion. , the large protrusion = the one for the large protrusion, .
. 5, .
3.
. 60 70% . , . , , .
1. IS .
The function f is continuous.
f .
2. IS .
The set R is a ring.
R .
3. CONSIDER .
Consider the point (1,1) R2.
(1,1) R2.
4. WE HAVE .
We have
|
sin2 x + cos2 x = 1. |
(1) |
|
sin2 x + cos2 x = 1. |
(1) |
5. LET BE .
Let V be a vector space.
V .
6. FOR ANY THERE EXISTS .
For any continuous map f : I → I there exists a fixed point c I.
f : I → I c I.
7. BY DENOTE .
By R denote the set of real numbers.
R .
8. IT FOLLOWS FROM THAT [].
It follows from Lemma 2 that α is injective.
2 , α .
9. IS CALLED IF [].
A manifold is called acyclic if Hi(M) = 0 (i > 0).
, Hi(M) = 0 (i > 0).
The map s: B → E is called a section of ξ if ξ ○ s = id.
s: B → E ξ, ξ ○ s = id.
10. IF [], THEN [].
If D( f ) is compact, then f is bounded.
D( f ) , f .
11. [] IF AND ONLY IF [].
A closed 3-manifold M is S 3 if and only if π1M = 0.
M S 3 , π1M = 0.
12. HAS THE FORM .
The simplest parabola has the form x2 = y.
x2 = y.
:
1. Translation Memory.
2. , .
3. , .
1. .., . . , , , []/ .. , , 1999.
2. . , , ., 2004.
3. V. Zaitsev, Russian Typographical Traditions in Mathematical Literature [] / V. Zaitsev, A. Janishevsky, A. Berdnikov Euro\TeX'99 Proceedings.
4. .., - - []/ . .. .: , 1994. 414.
5. Encyclopedic Dictionary of Mathematics, ed. Kiyosi Ito, Vol 1 and 2, The MIT Press, Cambridge, 1993. 2171pp.
6. .., - []/ .. .: -, 2000. 112.
1
#!/usr/bin/perl
# , ,
# , .
# texm
#
#
open(DICTIONARY,"dictionary.txt") || die " $!n";
#
while (<DICTIONARY>){
chomp;
if (!/[#]/){
($word,$tr)=/(.*);\s+(.*)/;
$DIC{$word}=$tr;}
}
#
close(DICTIONARY);
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foreach (@currentfiles){
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close(SOURCE);
close(DEST);
}
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closedir(CURRENT);
print "work has done\n";
print "please, press enter";
$end=<STDIN>;
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