英 [ˌəʊvəhed prəˈdʒektə(r)]
顶置投影仪：一种投影仪，用于将水平透明胶片上的图形材料的放大影像投射到垂直屏幕上。
overhead projector //
可数名词 An overhead projector is a machine that has a light inside it and makes the writing or pictures on a sheet of plastic appear on a screen or wall. The abbreviation is also used. 高射投影仪
a projector operated by a speaker; projects the image over the speaker's head
投影机
高架式投影机
投影仪
投影器
投影机
高影机
... 同馀式 equation for residue modulo some number 透镜式投影仪 overhead projector 先占式多工作业 preemptive multitasking ...
（读大学时专业课上见过，需要几乎全黑的放映环境，放在桌上像个复印机）6． 投影机 （ Overhead projectors ）：原来是光学的，现在已。
透射式投影仪（Overhead projector）是一种将透明幻灯片放置在书写玻璃台上，利用灯光透过玻璃台进行照射成像的投影仪。
在外研社英语教参中，在所使用教具这一项中，常出现一种叫OHP的教具，它是高射投影仪(overhead projector)，另外，还出现handout，是讲义。
In each classroom there is a computer, an overhead projector, and a smart white board.
每个教室里都有一台电脑、一台投影仪和一块智能白板。
A transparency for use with an overhead projector.
使用高射投影仪观看的幻灯片。
Consider using a flip chart, overhead projector or a blackboard.
可以考虑利用一个活动挂图，投影仪或者一个黑板。
As the advanced-placement economics students file into Room 339 at Stuyvesant High School in Lower Manhattan, Clarissa Bushman displays a graph on the overhead projector.
The important thing is to back those points up, with another visual aid, even something as simple as hand illustrating your points on a white board or overhead projector.
FORBES: The Digital Age: Why Adding Visuals Will Transform Your Presentation
The Buhl Industries Mark IV Opus Opaque Overhead Projector.