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To prevent silicon from agglomerating
→ should cool the solid quickly
Rapidcooling
→ large thermal gradient in crystal
Postulate K=20W/m K
Diameter of wafer: 10-20 cm
L (latent heat of fusion) = 340 cal/g
Temperature gradient in silicon CZ (dT/dx) : 100°C/cm
cool)
Fine!
ENZO pats JACQUES on the shoulder and leaves his hand
there -- a lightly intimidating gesture.
ENZO
You dont mind if I go instead, do
you?
JACQUES
(intimidated, and
pretending not to
be)
No...
ENZO
If you did mind, youd tell me,
wouldnt you?
ENZO pats his shoulder reassuringly.
ENZO
(to his brother)
Roberto, mio palmo!
ROBERTO who has already started to moisten his big
brothers gear i
기존 전통방식으로 제조가 불가능한 Three-dimensional cooling mold, Aircraft parts 등을 더욱 weight lightening 하는 방향, 그리고 Personalized medical parts 등 다양한 방식으로 활용할 수 있습니다. 즉, additive manufacturing technology을 이용하면 다양한 소비자의 욕구를 충족시킬 수 있는 생산이 가능하다고 생각합니다.
Rapid Transit (BRT) comes in. The BRT is a bus system that provides faster, more efficient service than an ordinary bus line. It features longer buses that run in specially marked highway lanes where cars are prohibited. Unlike a subway system, which requires a concentrated urban population to make it profitable, a BRT works best in less densely populated suburban areas. By taking a BRT, commuter