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徐徐2009:卖晶振咯,,7.023 7.050 (2017-10-20 11:49)
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bi4jcp:49U和49S的晶振除了封装尺寸不同还有什么区别? (2017-10-22 07:25)
BG6QBY:Q值,49U的要大很多,Q值决定了晶体组成的滤波器的性能。 (2017-10-22 10:41)
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