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地线和电源线
双层板时,一般一面空白处全布成地,另一面布电源和信号线。四层以上的PCB板,一般都会把GND和电源做成内电层,改善回路阻抗。 第二部分、AC ...
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Israel, Iran accept ceasefire
US base in Qatar attacked
Lifts limits on deportations
60 children rescued in FL
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Ford recall
On war powers resolution
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1st images of largest camera
Bad Company guitarist dies
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To hear case of Rastafarian
Man killed by lightning
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To end service to Miami
Media rights deal with CBS
2-year extension with Bruins
LSU wins NCAA baseball title
Bowman backs July rate cut
A’s celebrate groundbreaking
Italian sphere sculptor dies
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FL immigration law petition
Scrubs news of Jony Ive deal
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Home sales rose slightly
Sues Big League Advance
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