专利名称：Purintokairoban
村居翻译>库房管理办法发明人：ROBAATO BURYUUSUTAA
qq独立密码
HICHIKOTSUKU,EDOYUAADO
KERAAMAN,JON HOORU KUUNSU 申请号：JP91088871m等于多少kb
申请日：19870415
电压表的作用公开号：JPH0230200B2痰多如何治疗
公开日：
古诗19首
曾子杀猪翻译19900704
专利内容由知识产权出版社提供
摘要：A printed circuit board for electric circuits is formed of plural layers of electrical conductors and includes through holes and vias arranged in a regular pattern along points of a grid laid out along othorgonal axes of a Cartesian coordinate system. Electrical components such as circuit chips and discrete components are to be mounted to the through holes, while the vias connect electrical conductors of different layers. Conductors of a layer are grouped together as multiple-conductor channels which are routed among the through holes and the vias to make electrical connections among the electrical components. An additional via can be entered in a central portion of a grid cell by rerouting conductors of channels in the cell through arcuate gments, thereby permitting connection between conductors of channels on different layers while prerving the original grid pattern of through holes and vias.
申请人：INTAANASHONARU BIJINESU MASHIINZU CORP
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