PC Steel Wire and PC Steel Strand
bar code， bar code reader
bar machine ice bar freezer
bar-to-bar voltage peak
five-bar linkages similar to four-bar linkages
members of PC and CPPCC connections
1860 MPa grade PC strand
1-D photonic crystal(PC)
2-Phase Commitment Protocol(2PC)
4πβ(pc) γ(HPGe) coincidence