دیکشنری تخصصی مهندسی نفت - نسخه آنلاین

n: a white high-level cloud that is composed primarily of ice crystals. This type of cloud forms from cirrus or cirrostratus clouds and has a rippled appearance. status n: a very thin, white, high-level cloud that produces halos visible around the sun or moon. This type of cloud is composed of ice