底片: negative; photographic plate ...观察: observe; watch; survey; obse ...源: source; fountainhead胶片观察器 底片观察用光源: filmviewer底片评片灯 观片灯 底片观察用光源: film viewer底片观察灯: film illuminator; negatoscope底片观察盒: negatoscope底片观察灯底片检验镜: viewing lantern底片观察器的反光板: film viewer reflector底片观测器: film viewer; negatoscope观察用滤片: viewing filter观察用装置: observers apparatus玻片观察孔: plate glass window; plate-glass window度片观察器: film viewer胶片观察屏: film viewing screen胶片观察器: film viewer影片观察仪: film viewer备用光源: standby power source采用光源: type of tube使用光源: use lights制版用光源: graphic arts light source玻璃片观察孔: plate-glass windowx线照片观察灯: film observation equipment射线胶片观察灯: x-ray film illuminator x缩微胶片观察器: microfiche viewer