type ACS material measure, cross sinusoidal measurement standard, cross sinusoidal standard
material measure/measurement standard that is formed by the addition of a sinusoidal wave along the X axis, defined by its period and its amplitude and a sinusoidal wav along the Y axis, defined by its period and its amplitude, pinnamõõt/pinnaetalon, mis moodustub X-teljele suunatud siinusaine, mida iseloomustab periood ja amplituud, ja Y-teljele suunatud siinuslaine, mida iseloomustab periood ja amplituud, liitmisel
