floor grille 中文意思是什麼
floor grille
解釋
地面回風口-
2assemble the grille ceiling in advance on the floor
2將格柵天花在地下預裝好 -
2assemble the grille ceiling in advance on the floor ; 3mount each grille ceiling assembled on the suspended hook of the iron wire
3將預裝好的每份格柵天花裝在鐵線吊鉤上將跺鉤穿進主骨孔內
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