This paper mainly discusses the sensitometry and chemical analysis routine work in motionpicturefilm processing.
本文主要叙述以下二个题目，即感光测定和化学分析。
2
The shift from silent to sound film at the end of the 1920s marks, so far, the most important transformation in motionpicture history.
20世纪20年代末无声电影向有声电影的转变标志着迄今为止电影史上最重要的转变。
3
The curriculum at the schools usually includes courses on drawing, coloring, and motionpicture production, as well as film directing, writing plays and the study of copyright laws.