国外用非常规胶片拍摄70mm影片，并以特殊的形式如天幕、地幕、多幕等方式作为展示活动画面的手段，在一些博览会上与一些娱乐场所已屡见不鲜，而且是五花八门，一些例子如图（1）中所示。但在我们中国，除了单一形式的环幕、球幕、大幕之外，其它复杂展示形式的影厅以前基本没 Foreign filming 70mm film with non-conventional film, and in a special form such as the sky, the ground curtain, multi-screen and other means as a means of displaying the activities of the screen, in some expositions and some entertainment has been common, but also varied, some examples shown in Figure As shown in (1). But in our country, in addition to a single form of screen ring, ball screen, the curtain, the other complex forms of display basically no shadow hall