optical sound head meaning in English
光声探测头
光学录音头
Examples
- Film 16 mm ; optical sound heads , requirements and general data for measuring
16mm胶片.光学录音头.测量要求和一般数据 - Film 35 mm ; optical sound head for film 35 mm ; requirements and general data for measuring
35mm胶片. 35 mm胶片用光学录音头.测量要求和一般数