You only have to think of chalk boards or overhead projectors to appreciate that.

你只需要粉笔板或投影仪认为要对此表示赞赏。

The school offers facilities such as computers, overhead projectors, work places etc. In order to make your studies easier.

学校提供的设施例如电脑，投影机，自习室等，使大家能更容易的投入学习。

Large screen displays, projectors, overhead projectors, LCD projectors, DVD players, tape recorders, video camcorders are ready for your renting by hour or by day.

大屏幕显示区、投影仪、幻灯机、液晶投影机、DVD机、录音机、录像机等可按小时或按天计算供您使用。

Overhead, Christie projectors produce a blended 3568 x 2000 pixel image yielding 15 pixels per inch of high definition.

在头上，Christie的放映机显示一个混合的3568 x 2000像素图像，产生高清晰的每英寸15个像素。

Mobile servers, which roll easily on casters, support a wide variety of accessories, office materials and AV equipment such as monitors, video recorders and overhead or slide projectors.

可移劢的托盘，带有小脚轮，可以轻易地滚劢，可以支撑许多多样化的附件，办公材料和 会议使用的音频不视频设备，如监听器、录影机和架高的戒滑劢的投影仦。