乘数系数单元
multiplier coefficient unit
单极-单极变换曲线
pole-pole transformed curve
变系数单指标模型
Varying-coefficient single-index model
单极（PN极）特性测试结构
Test constucture of single-polar characterise
单极单投
single -pole single -throw
Single-throw
Single-pole
单极单投开关
single-pole single throw switch
系数单元乘法器
coefficient unit multiplier