ȭ ߰ ִ 35 Ѵٰ ߴ. ߰ ڴ 6 26ϱ ֽ ִ. ߰ ð 6 26 (1920) 1.82%. ̴ ä 3 ݸ 2.95% 62% شѴ. 8 12 ε, 6 26 (1920) ȭ ֽ ֶ 2 ä ʴ ð 1 ߱ݸ 3/5 شϴ ͷ ø ƴ.
ȭ 1ִ 100 ߴ. ְ ð 5.6% ߴ. ص Ѵٸ, 6 26 (1920) ֽ ð
5.2% ̸ ȴ. ̴ ä 3 ݸ 2.25%p ̴.
ֱ 3Ⱓ ȭ ִ ( ) 50 75 100 ų ø ϸ, 100 ɼ ʴ.
PVC ٴ, ռ
ȭ PVC ٴ, ռ ȸ. 'ȭ(PVC: Poly Vinyl Chloride)' ٴ PVC ̽Ʈ (Paste resin) . ⸦ ִ.
ٴ LGϿý, KCC, ȭL&C ü. ٴ(, Ʈ) ȭ 11%ܷ ȴ.
PVC ٴ ֿ . LGȭ, ȭɹĮ ַ ϸ, ְȭκ Ѵ. 86% ϴ ٽ . ĻǴ / ȯ Դܰ ɼ .
1б ȭ 156 5% ϴ ƴ. ⺸ 22600 1б 91000 301%, 28800 1б 74500 158% ߴ.
̴ (ǰ ǸŴܰ - Դܰ) ͼ . б⺸ ȭ ٴ ǸŴܰ ʹ 4521 Ⱓ 5% ö. ݸ , ( 85%) Դܰ ųα 1253 2%, ( 12%) ܰ ʹ 926 10% ȴ. ̿ 1б ͷ 5.8% 1.5% 4.3% .
ȭ 2б ǥ ʾҴ.
, 1б ȯ (ֱ 4 б ջ) ȭ ְ(PER) 8 5 9躸 ŷǰ ִ.
ֽMRI м , 16%
ڰ ֽMRI м ȭ ŷµ 25 15 ü 271( 16%) ߴ.
ٸ Һ ȭǸ ͼ ϶ ɼ ִ.
â 2 Ҵ. 1б ȯ Ȱ 帧 ͺ , 帧 7% ġ ݿƴ.
ֽMRI ڿ ü ǽð м . MRI ͼ强 繫 Ӹ ƴ϶ Ӽ ִ ° ְ ر Բ ǴѴ. ֽMRI 25 ְ ̸ 췮 ̴. 5 ΰ · Ÿ.
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