exterior focussing telescope

进出口专... ... exterior aircraft cleaner 飞机外部清洁剂 exterior focussing telescope 外对光望远镜 exterior joint 外接头 ...

36测量学_馆档网 ... "外角"," exterior angle" "外调焦望远镜"," exterior focussing telescope" "外圆廓"," exterior frame" ...