Хг аа в г и Ъ à зи в Ыдги Я а в Шжг зз
Хг аа в г и Ъ à зи в Ыдги Я а в Шжг зз Хг аа в г и Ъ à зи в Ыдги Я а в Шжг зз
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ÛÖh×ØÓÒÚØÚØØÖÒ×ÖÓÒظT<br />
lim ρC T t+∆t − T t<br />
∆t→0 ∆t<br />
= ̺C ∂T<br />
∂z<br />
1 ∂<br />
r ∂r (kr∂T ∂r ) + ∂ ∂z (k∂T ∂z ) + J2 ρ = ̺C ∂T<br />
∂t<br />
−k ∂T<br />
∂n = h(T − T ∞)<br />
−k contact<br />
∂T<br />
∂z = h electrode(T − T electrode )<br />
ÅÓÐÐÒÓØÊ××ØÒËÔÓØÏÐÒÈÖÓ××