常見例句雙語例句Moreover, some basic rules of high-speed printed circuit board (PCB) design were discussed.最後，本文還對(duì)高速印刷電路板（PCB）設(shè)計(jì)的一些基本槼則進(jìn)行了探討。The spectral of a DDS system is dependent on the phase noise of the clock source and the printed circuit board design.低相位噪聲時(shí)鍾信號(hào)及優(yōu)良的電路技術(shù)是獲得DDS高純頻譜的關(guān)鍵。cnki.clcn.net.cnThis text analyses that earth noise and electromagnetic reasons and countermeasures penetrated emerge in the printed circuit board signal earth design of PCB.本文分析PCB印刷電路板信號(hào)接地設(shè)計(jì)中産生接地噪聲及電磁幅射的原因和對(duì)策。 返回 printed circuit board design