光学声 meaning in Chinese

optical sound

Picture image area and photographic sound record on 35mm motion - picture release prints - position and dimensions
35mm电影发行拷贝上画面和光学声迹的位置和尺寸
Overall electro - acoustic frequency response for repro - duction of 35mm optical sound track ? reproduction cha - racteristics
35mm影片光学声迹的还音电声频率响应特性
Cinematography - monophonic 35mm negative photographic sound record on 35mm motion - picture film - position and maximum width dimensions
35mm单声道电影光学声底片上声迹的位置和最大宽度尺寸
Because there exists the different strength of coupling between the electron and phonon , there have some different ways , such as the perturbation theory , variation theory , green function theory and the feynman " s path integral approach . they can be appropriately used in different area
Frohlich极化子哈密顿中电子和光学声子耦合强弱不同，有着不同的研究方法，诸如微扰论，变分法， green函数方法，以及feynman的路径积分方法，这些方法处理问题的范围是不同的。