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刚才看见一盘开盘带的说明:
# u0 A8 c/ R- l4 h+ DThis magnetic tape recording should be reproduced at a speed of 7 1/2 inches per second using "a half track head" as normally provided on dual track machine., o: S. y, x! ?/ A3 ^
" y+ K4 j- M4 s; g$ C6 I. Z1 Q, X这里的“a half track head”是什么磁头?
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" N3 e& m5 D e还有一盘磁带写着1/4 track 7-1/2IPS stereo tape recording.
, J: m0 [) p! j" j8 J这里的1/4 track什么意思?9 @& b7 l' y9 `* {; {+ N
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请懂的开友予以解答,谢谢! |
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