Los ntawm Qhov

Los ntawm qhov tseem hu ua Plating Through Hole. PTH yog lub ntsiab lus ntawm Plating Through Hole. Qhov no yog qhov zoo tshaj plaws ntawm lub qhov, tsuav yog PCB tuav mus txog lub teeb, koj tuaj yeem pom lub qhov ci ci yog "Los ntawm qhov". Qhov no kuj yog qhov yooj yim tshaj plaws ntawm lub qhov, vim hais tias thaum koj siv lub laum los yog laser ncaj qha mus laum lub rooj tsavxwm yuav ua tau, tus nqi kuj pheej yig.

Tab sis qhov sib txawv, muaj qee lub voj voog uas tsis tas yuav txuas nrog cov qhov qhib no. Piv txwv li, peb muaj 6-storey tsev, thiab kuv yuav nws lub tsev thib peb thiab plaub. Kuv xav tsim ib lub staircase uas tsuas yog txuas rau pem teb thib peb mus rau pem teb plaub. Rau kuv, hauv pem teb plaub yog invisibly coj los ntawm tus thawj staircase txuas thawj pem teb mus rau lub thib rau pem teb. Yog li ntawd, txawm hais tias qhov dhau ntawm qhov pheej yig, qee zaum nws yuav siv qee qhov chaw PCB.