PN PNPNNP PNPN.

P3+ N5+.

null null PN 1. PN 2. .

Understanding the Context

UJTPNNb1b2 b2.

(1) PN PNPNPNPPN.

nnpn.

PN PNPNPN.

Key Insights

null PNPNPN

2 2-39 NMOSUGSaUGS=0bUGS>0 2-39UGS=0.

D1 2.7kpn 2.7k 510