The frame applies the square and hollow iron pipe so that the height and width of the vertical bushing and transverse bushing at the two sides can be telescopically adjusted.
该框架采用方型空心铁管，两侧竖向、横向套管均可伸缩调节高度、宽度。
The frame applies the square and hollow iron pipe so that the height and width of the vertical bushing and transverse bushing at the two sides can be telescopically adjusted.
该框架采用方型空心铁管，两侧竖向、横向套管均可伸缩调节高度、宽度。
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