Rod material specification regarding to the diametre of round rod. Square rod and multi-shaped rod regarding to inside diametre.
棒材规格指圆棒直径、如方棒及多角形棒指内切圆直径。
By adopting square rod support instead of the round rod support, the shear action between the pipe bundle and support structure can be reduced at a high degree.
把杆式支撑结构中的圆杆支撑改为方杆支撑，很好地减小管束与支撑结构间的剪切作用。
Its model involves a two-mirrored system that directs sunlight down an optical rod onto a small (1 square centimeter) photovoltaic cell.
它的模型有一个双面镜像系统。该系统直接把阳光投射进一块小型(1平方厘米大小)光伏电池的光学感应棒上。
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