ij | ij | |||
, | 0,003...0,3 0,3...3,0 3...300 300 ...30 | 107...106 106...104 104...102 102...10 | ||
, | 30...300 | 10...1 | ||
, | 3003 | 1 ...100 | ||
, | 3...30 | 100...10 | ||
, | 30...300 | 10...1 | ||
, | 300...3 | 100...10 | ||
, | 3...30 | 10...1 | ||
, | 30...300 | 10...1 | ̳ |
, , , , , . <100 , , - . . , . ( ), , , , ,
, /2,
I , /2;
- , ;
r , .
㳿 (), /2.
㳿 W,
W = *S,
S , 2.
( ), , , .
(, ) . . , , .
(, /) (, /) :
:
=/(2πωεr³);
H= L/(4πr2);
(), ;
L (), ;
ω , ω =2πf, f ,;
ε , /;
r , ;
|
|
:
= /r;
= /4πr;
, ;
σ .
- :
=3/S;
- :
=σ/(4πr2);
- , , =гτ/;
г - , ; t - , ; - , ;
S - , 2.
ֳ , .
, , , , (), ( .. ). ( ) . , , . (, ) , .
12.1.006-84 . 239-96 .
12.1.006-84 60 300 . 60 300 , /, , /, , 300 300 㳿 ,/2. , (/)2* ,(/)2*:
= ()2*;
= ()2*;
, , / /;
- 䳿 , .
, 0,06 3,0 , = 500 /, = 20000 (/)2*.
12.1.006-84 60 - 300 ( 5- , 6-8 - ) , , 300 -300 ( 9-11) 㳿
䳿.
10