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 (表1-59)表1-59角度与弧度计量单位及换算角度弧度角度弧度角度弧度角度弧度角度弧度1′2′3′4′5′6′7′8′0.00030.00060.00090.00120.00150.00170.00200.00239′10′20′30′40′50′60′1°0.00260.00290.00580.00870.01160.01450.01750.01752°3°4°5°6°7°8°9° (共 737 字) [阅读本文] >>