开始时，这些管子里只含有一个塑料棒。
较低的塑料棒重量减少皮带磨损和能源消耗。
The lower weight of the plastic rods reduces belt wear and energy consumption.
到了晚上，嵌在每个塑料棒内的光源将会使整个场馆熠熠放光。
At night, light sources embedded in each rod will allow the whole structure to glow.
由单个正方形截面铅棒顺遂塑料包裹身材。
Made of a square section lead bar encased in a smooth plastic body.
由单个正方形截面铅棒顺遂塑料包裹身材。
Made of a square section lead bar encased in a smooth plastic body.
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