作者nestealee (昂～～出去玩ㄇㄟ)
看板Chemistry
標題我跟它不熟...有誰跟它熟的
時間Tue Feb 28 19:57:53 2006
3.Which hardware method could recover the signals even when the
signal-to-noise ratio is unity or less?
(A) Lock-in amplifier
(B) Chopper amplifier
(C) Analog filter
(D) Difference amplifier
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◆ From: 210.58.173.81
1F：→ enoch7:Lock-In Amplifier 02/28 21:01
2F：→ nestealee:I know but why? 02/28 22:11
3F：→ radiohead627:鎖定放大器 03/01 09:22