Recitaiton room; Teaching room; Class-room; Lecture room  教室

classroom; lecture room; recitation room; teaching room  教室

Classroom;Teaching room;Recitation room;Lecture room  教室

Lecture room; Classroom; Teaching room; Recitation room  教室

Teaching room; Classroom; Recitation room; Lecture room  教室

One class elementary school; One room school; One teacher school; Single room school  单班小学

one class school; one room school; one teacher school; single room school  单班学校

One room school; One class elementary school; One teacher school; Single room school  单班小学

One teacher school; One class elementary school; One room school; Single room school  单班小学

room in room  房中房

room in room structure  房中房结构

Single room school; One class elementary school; One room school; One teacher school  单班小学

500 kV unmanned substation  500kV无人值班变电站

anti-radar unmanned aerial vehicle  大气数据传感系统; 反辐射无人机

Antiradation unmanned aerial vehicle UAV  反辐射无人机

anti-radiation unmanned aerial vehicle  扩散方程; 反辐射无人机

Antiradiation unmanned aerial vehicle UAV  反辐射无人机

antiradiation unmanned aircraft resistance  抗反辐射无人机

artificial object unmanned aerial vehicle  假目标无人机