... decenteredlens偏轴透镜 decentering拆除拱架 拆卸拱架 decenteringdistortion偏心畸变 ...
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拱架具有一定的刚度和抗御风雪的能力，又具有占地面积小，不需拆除可四季使用及造价低廉、施工方便等特点。
The utility model has the characteristics of small ground occupation area, low cost, convenient construction, etc. , and does not need to be dismantled and can be used in four seasons.
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