1. You are now ready to develop wind pressure diagrams for a simple rectangular building. �������Ѿ����ü���һ���ij����ν����ķ�ѹͼ����
2. Define patterns to be etched simply by drawing a rectangular selection box around the patterns. ������Ҫʴ�̵�ͼ��ʱ��ֻ�����һ�����ο�ѡ����Ҫ��ͼ�Ρ�
3. This is a four color shows a rectangular block of the procedure, this procedure very well, very good use! ����һ����������ɫ����ʾһ�����ο�ij����������ܺã��ܺ��ã�
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adj.
1. having four right angles
2. having a set of mutually perpendicular axes; meeting at right angles