片语
Protablc overhead projector便携式投影仪
Slide & Overhead projector滑动;下跌; 幻灯片;变糟;滑梯;滑垒;坡道滑;雪崩;载物玻璃片;(机器或乐器的)滑动装置;发夹;轻便鞋
Film Overhead Projector胶片投影机
Overhead Projector Transparency投影机透明度
type overhead projector反射式教学投影仪
overhead d projector高架投影机
Overhead Projector with screen幻灯机及屏幕
overhead projector noun高射投影仪