1. At breast height, measure the trunk diameter by a ruler. ���ز��߶ȵ�λ�ã���һ��ֱ�����ȸɾ���
2. Big cutter diameter, high cutting speed, good process quality. ����ֱ�����и��ٶȸߣ��ӹ��������á�
3. Measure (the rotor) to see whether its diameter is within tolerance or not. ������ת�ӣ���������ֱ���Ƿ��ڹ���������Χ֮�ڡ�
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n.
1. the length of a straight line passing through the center of a circle and connecting two points on th
2. a straight line connecting the center of a circle with two points on its perimeter (or the center of
