A / v switching is a feature that allows users to connect one or more sources , such as a vcr , camera and / or laser videodisc player and select which source will be monitored A / v转换是一种功能,允许用户连接一个或多个播放源,如录像机、照相机和/或激光视盘播放器,并且选择监视哪种播放源。
They can also " launch " a multi - stage rocket in slow motion and trace the successful development of launch vehicles and their payloads through videodisc programmes 观众可坐在回转椅上,体验和学习回转仪的原理此外,观众可发射一枚多级式火箭。播放的影碟节目,则介绍运载火箭的成功发展。
Visitors can select videodisc programmes on various science fiction topics for group viewing . another exhibit challenges visitors to design alien life forms based on the physical conditions of other worlds 另一件电脑展品,是让观众根据其他行星的独特物理状况,找出能适应该特殊环境的外星生物的模样。
In this area , visitors can select videodisc programmes on stellar evolution and star systems . they can also visualize the spatial relationship between component stars of such famous celestial configurations as the orion and the big dipper 观众可选看关于恒星演化和恒星系统的影碟节目,他们亦可看到著名的猎户座和北斗七星内各星体之间的空间关系。