NPD的相关资料：
临近单词
NPL
NP
NPV method net present method
NPR's Julie Rovner has more.
NPC and its standing committee
NPDU Network Protocol Data Unit
NPP and PSPP combined operation
NPN three four lines non-buried
NPT threaded ends are standard.
NPAG Network Program Advisory Group
NPT Normal Pressure and Temperature
npn pnp pair differential amplifier
