optical frame
... Optical flat 光学平面 optical frame 镜框 optical frames 光学镜 ...
picture frame
镜框 picture frame
picture-frame stage ; proscenium stage ; Puroseniamu Achi Stage/Proscenium Stage
Cartridge Size
titanium wire for frames
[picture frame]∶在用木头、石膏等做成的框子中镶上玻璃而制成的框架,用来装相片或字画。