He wants to know what the words "cyclically loaded" mean.
Cyclically loaded is a load that is not constant or steady, i.e., applied in a continuos manner; nor erratic, i.e., that is applied occasionally at irregular intervals and for irregular periods of time.
Cyclically loaded is a load that is applied at regular intervals and for the same (or at least similar) period of time.
Giovanni S. Crisi
Sao Paulo - Brazil