磁录音 meaning in Chinese

magnetic recording
magnetic sound recording

Identification card systems . intersector thin flexible cards . part 2 : magnetic recording technique
识别卡系统.挠性薄卡片.第2部分:磁录音技术
Cinematography - 8 mm film - sound - specification for recorded characteristics for magnetic sound record on 8 mm type s motion - picture prints and full - coat magnetic film perforated 8 mm type s
电影技术.第1部分: 8mm胶片.第4节:伴音.第6小节:打过排孔8mm s型孔的8mms型电影胶片和完全涂磁膜磁录音录制特性规范
Cinematography - 8 mm film - sound - specification for location and width of magnetic striping and gaps of recording and reproducing heads for magnetic sound record on 8 mm motion - picture film with picture
电影技术.第1部分: 8mm胶片.第4节:伴音.第3小节:带有画面的8mm胶片录音磁道位置和宽度以及磁录音和录放磁头间隙规范