piston hydraulic single prop
DWX single hydraulic prop
“single seat， single vote” system
1# Generator Single Unit Initiating Single Pump
cable-stayed bridge with a single tower and single
cable-stayed bridge with single cable plane and single tower
cable-stayed bridge with single pylon and single c
dual single-input single-output model
fiber optic cable， single mode， standard， tightly buffered， single fiber
SDSL Single-Line Digital Subscriber Line，Single-Line DSL
single channel single pulse
single column over single pile
single external illuminator and single receiver
single frequency and single-epoch
single generator single load equivalence method