decay factor; decay coefficient; attenuation constant

binary-path or multi-path

Bye-path value (By-path valve)

join-graph of path and path

light path and optical path length control mirror

the unite of path and path graphs P(m)∨P

(ε+β~+) decay

abnormal decay

acoustic reflex decay

actinium decay series

activity (decay)curve

activity decay

aerobic decay

Aftershock decay

airblast decay

algae decay

algebraic decay

allowed beta decay

alpha decay