灯杆的杆高: the height of the lamp post, 上口径: the upper diameter , 下口径: the lower diameter, 壁厚: wall thickness, 单臂: single arm, 双臂: double arms, 法兰尺寸: flange size
第2个回答 2011-03-15
height of lamp pole top diameter bottom diameter thickness single arm two arm size of flange本回答被提问者采纳