三面翻楼顶大字制作广告牌却可以凭着内置电机带动三菱柱转动，轮换三面展示，使得原本只能容纳一个楼顶大字制作广告位的空间变成三个楼顶大字制作广告位！
Three face turn billboard but can be driven by a built-in motor MITSUBISHI column rotation, rotation three surface display, making it can only accommodate one ad space into three advertising space!
减速机箱由三个钢齿成 品字形带动斜齿，运行有力，转速平稳。
It has three gear-driven; running is hard, rotate speed is calm.
三个地区房地产业对整个经济的带动作用普遍较弱。
The driving effect of real estate industry on the whole national economy is generally weak.
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