Audiovisual , video and television equipment and systems . part 20 : methods of measuring and reporting the performance of 16 mm sound film projectors 视听视频和电视设备及系统.第20部分: 16mm有声电影胶片放映机的性能测量和报导方法
Biggest disappointment doesn t necessarily mean the movie is bad , it is just that the movie fails to meet our expectation . johnnie to s my left eye sees ghost 但是阮玲玉自己是广东人，第一语言是广东话，国语并不灵光，故能否顺利从默片过渡到有声电影的世界是一大难题。
Many of these inventions ? including sound motion pictures and stereo recording , along with 23 , 00 other patents ? come from at & t bell laboratories founded in 1925 这些发明当中有许多项发明? ?包括有声电影和立体声录音，随同23 ， 000项其他专利? ?来自1925年建立的at & t贝尔实验室。
