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刚才看见一盘开盘带的说明:
; R; b9 b- {% z" |This 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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这里的“a half track head”是什么磁头?
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还有一盘磁带写着1/4 track 7-1/2IPS stereo tape recording.
! s9 O, Q0 _: c. E1 K这里的1/4 track什么意思?
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$ L' `8 z6 A0 ~/ _% s! @请懂的开友予以解答,谢谢! |
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