Nacreous Clouds

nacreous clouds

[′nā·krē·əs ′klau̇dz] (meteorology) Clouds of unknown composition, whose form resembles that of cirrus or altocumulus lenticularis, and which show very strong irisation similar to that of mother-of-pearl, especially when the sun is several degrees below the horizon; they occur at heights of about 12 or 18 miles (20 or 30 kilometers). Also known as mother-of-pearl clouds.

Nacreous Clouds

thin, translucent clouds that occur at high elevations (about 22–30 km). They are observed rather infrequently, usually at latitudes of 55°-60° just before sunrise or just after sunset (against the daytime background of diffused light they are invisible).

单词	nacreous clouds
释义	Nacreous Clouds nacreous clouds [′nā·krē·əs ′klau̇dz] (meteorology) Clouds of unknown composition, whose form resembles that of cirrus or altocumulus lenticularis, and which show very strong irisation similar to that of mother-of-pearl, especially when the sun is several degrees below the horizon; they occur at heights of about 12 or 18 miles (20 or 30 kilometers). Also known as mother-of-pearl clouds. Nacreous Clouds thin, translucent clouds that occur at high elevations (about 22–30 km). They are observed rather infrequently, usually at latitudes of 55°-60° just before sunrise or just after sunset (against the daytime background of diffused light they are invisible).
随便看	ptr/p ptrp ptrr ptrrc ptr record ptrs ptrsl pt/rt ptrtc ptrv ptrw ptrwa p&ts pts pts-1 pts1 pts1-bp pts1r pts1 receptor pts1 receptor docking protein pts1 receptor-docking protein pts2 pts2r pts2 receptor ptsa