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把87°42′54″化成度的形式是   .

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102,87,100,79,82,62,84,42,22,12,68  102,100,87,84,82,79,68,62,42,22,12  12,22,42,62,68,79,82,84,87,100,102  102,87,42,79,82,62,68,100,84,12,22  
(102,87,100,79,82,62,84,42,22,12,68)  (102,100,87,84,82,79,68,62,42,22,12)  (12,22,42,62,68,79,82,84,87,100,102)  (102,87,42,79,82,62,68,100,84,12,22)  
2,1  1,2  -2,1  -2,-1  
(102,87,100,79,82,62,84,42,22,12,68)   (102,100,87,84,82,79,68,62,42,22,12)   (12,22,42,62,68,79,82,84,87,100,102)   (102,87,42,79,82,62,68,100,84,12,22)  
39度40分30秒,  39度40分48秒  39度40分54秒  39度40分42秒  
方丝弓矫治器  整乎牙弓时,要使后牙伸长、前牙压低  配合使用上颌平面导板  若需要口外弓,需使用颈带牵引矫治器  若矫正远中关系,可进行Ⅱ类牵引  
151,87,123,79,82,62,84,42,31,17,68  151,123,87,84,82,79,68,62,42,31,17  17,31,42,62,68,79,82,84,87,123,151  151,87,42,79,82,62,68,123,84,17,31  
(102,87,100,79,82,62,84,42,22,12,68)  (102,100,87,84,82,79,68,62,42,22,12)  (12,22,42,62,68,79,82,84,87,100,102)  (102,87,42,79,82,62,68,100,84,12,22)  
A  B  C  D  

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