基本解釋[機(jī)械工程]無(wú)連接磐孔詞組短語(yǔ)短語(yǔ)landless plated hole [電子]無(wú)邊鍍金孔landless via hole 無(wú)連接磐導(dǎo)通孔;無(wú)毗連磐導(dǎo)通孔landless plated -through hole 無(wú)連接磐孔landless hole更多詞組專業(yè)釋義機(jī)械工程無(wú)連接磐孔