常見(jiàn)例句雙語(yǔ)例句The printed circuit board assembly encapsulates and adheres the plastic-encapsulated electronic parts on the printed circuit board without welding technology.該印刷電路板裝配體在不進(jìn)行焊接工藝的情況下將塑封的電子部件封裝粘接到印刷電路板。ip.comQuad Flat No-lead(QFN)package of microwave chip is a relatively new packaging. It offers a small size and especially fits for high density printed circuit assembly.QFN封裝的微波芯片采用一種較新的封裝形式,這種封裝體積很小,特別適合高密度印刷電路板組裝。The measurement method of the characteristic parameters of the cleaning quality about welded printed circuit board assembly cleaned by non-ODS cleaner is introduced in this paper.本文主要介紹了印制電路板組裝件焊接后非ODS清洗劑清洗質(zhì)量表征參數(shù)的測(cè)量方法。 返回 printed-circuit assembly