change sign

change sign key

Geary’s sign change test

sign change

sign function

sign-change amplifier

spatial sign function

The number of stochastic sign change

electron energy change function

factors of function change rate

function change

touch to change function

work-function change

delta function (=δ-function)

function， function key

Changeable Message Sign (CMS)\ Variable Message Sign (VMS)

sign-least mean kurtosis(Sign-LMK)

change analysis of dynamically change

change gear change wheel