Zininzi iintlobo zemathiriyeli, zihlelwa njani izinto eziphikisayo njengezinto zokugquma ubushushu?Ngokuqhelekileyo, inokuthi ihlelwe ngokwezinto eziphathekayo, ubushushu, imilo kunye nesakhiwo.Ngokwezinto eziphathekayo, zinokwahlulwa zibe ziintlobo ezintathu: kukho izinto eziphathekayo, i-insulati engekho-polar ...
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