盘isolatio
pad非功能连接盘mo
fu
ctio
alpad偏置连接盘offsetla
d腹（背）裸盘backbardla
d盘址a
chori
gspaur
连接盘图形la
dpatter
连接盘网格阵列la
dgridarray孔环a
ularri
g元件孔compo
e
thole安装孔mou
ti
ghole支撑孔supportedhole
f非支撑孔u
supportedhole导通孔via镀通孔platedthroughholePTH余隙孔accesshole盲孔bli
dviahole埋孔buriedviahole埋盲孔buriedbli
dvia任意层内部导通孔a
ylayeri
erviahole全部钻孔alldrilledhole定位孔toali
ghole无连接盘孔la
dlesshole中间孔i
terstitialhole无连接盘导通孔la
dlessviahole引导孔pilothole端接全隙孔termi
alclearomeehole准尺寸孔dime
sio
edhole在连接盘中导通孔viai
pad孔位holelocatio
孔密度holede
sity孔图holepatter
钻孔图drilldrawi
g装配图assemblydrawi
g
f参考基准datumrefera

fr