amplitude characteristic, input-output characteristic
gain characteristic, gain-transfer characteristic, gain curve
amplitude locus, amplitude response
(напр. оптического) amplitude depth of modulation response
"There are many men of principle in both parties in America, but there is no party of principle."
Alexis de Tocqueville
"The more sand that has escaped from the hourglass of our life, the clearer we should see through it."
"You will never win if you never begin."
"This is the precept by which I have lived: Prepare for the worst; expect the best; and take what comes."