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刚才看见一盘开盘带的说明:
- H/ Q! f+ o# c+ P9 _0 N0 D; eThis 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.
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/ m- d* Y2 M5 _这里的“a half track head”是什么磁头?, S' K! B4 N; r* o* R4 o
! {9 K2 G! ?: y; r- g) j- Q' L, c还有一盘磁带写着1/4 track 7-1/2IPS stereo tape recording.% j( n' a4 |; z" u, L2 C
这里的1/4 track什么意思?
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: d8 J3 t$ B/ Q3 i, M: I请懂的开友予以解答,谢谢! |
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