角度
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演示用磁性活動角度演示器 Magnetic angle learning sticks for demo set 4
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學生用活動角度演示器 Angle learning sticks for pupil set 3
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角度學習器180度（學生用） Angle learning 180 degree protractor for pupil
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角度學習器360度（學生用） Angle learning 360 degree protractor for pupil
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360°全圓量角器(學生用）Protractor 360° for student
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180°半圓量角器(學生用） Protractor 180° for student
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【多種規格】教學量角器（有手柄）Teaching protractor with handle
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透明磁性指針教學量角器（有手柄）Magnetic teaching Protractor with indicator
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不銹鋼180度半圓分度規 角度尺 Angle Finder & Bevel Protractor Angle ruler
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數顯角度尺水平尺 Digital display levelling ruler
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