BT TU LEN
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Bảng 3. 2 L 9(3 4 )Bậc II ba biến tâm xoay<br />
TT<br />
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Nguyên nhân<br />
C/C+Đ (%) Tro bay (%) Bột đá (%) N/B<br />
1 40 27 12 0.25<br />
2 43 47 18 0.30<br />
3 46 57 24 0.35