rim angle meaning in English

边角
边界角
边缘角

Features of aluminum rim angle
铝质边角的特点：
As an essential fitting for the suspended ceiling . the aluminum rim angle can be used as an omamental plece on the top of the ceiling . the product styles ronge from wood line , broad wood line , l shape , perforation type , and conventional type , to wshope , theapplication of rim angle ensures the uniform color of the ceiling and the leg of angle
铝质边角是天花吊顶配件的必备配件，也可以作为吊顶顶部的配饰。有木线，宽木线型， l型，打孔型，普通型w型等不同风格，并备有多种颜色可供选择。尽最大限度确保天花与收角边颜色一致。