... õọửng tỏm. ã Dỏy quỏỳn phỏn taùn 8 Pha A: ( 2-7 ), ( 8- 1 3); (1 4-1 9), (2 0-1 ). Pha B: ( 6-1 1), (1 2-1 7); (1 8- 2 3), (2 4-5 ). Pha C: (1 0-1 5), (1 6-2 1); (2 2-3 ), ( 4-9 ). Vồùi caùch nọỳi trón ta õổồỹc ... ồớ caùc pha theo thổù tổỷ sau: Pha A: ( 1 -8 ), ( 2-7 ); (1 3-2 0), (1 4-1 9). Pha B: ( 5-1 2), ( 6-1 1); (1 7-2 4), (1 8- 2 3). Pha C: ( 9-1 6), (1 0-1 5); (2 1-4 ), (2 2-3 ). 210.2. SặẽC IN ĩNG CAM ặẽNG TRONG ... quỏỳn: y = 6, vaỡ nọỳi nhổ sau: Pha A: ( 1-7 ), ( 2 -8 ); (1 3-1 9), (1 4-2 0). Pha B: ( 5-1 1), ( 6-1 2); (1 7-2 3), (1 8- 2 4). Pha C: ( 9-1 5), (1 0-1 6); (2 1-3 ), (2 2-4 ). ã Sồ õọử khai trióứn dỏy quỏỳn: ...