Nekk (ae angl, neck — gardan), jismi silindrshakli dar plan ellipsmonand, ki az jinsi effuzivi tarkib yoftaast. Nekk dar qismi boloii surokhi (gardanai) vulqon az sakht shuda mondani lavai galiz ba vujud meoyad. Badi farsudan va shusta shudani jinshoi atrofash Nekk dar rui zamin khamchun sutuni alohidae boqi memonad.
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SATHI VINTI
SATHI VINTI, sathest, ki khati £ hangomi dar girdi mehvari nojunboni OO’ bo surati kunjii …