.fkam,a, .%dóh c, fhdackd l%uh lE.,a, Èia;%slalh - DNCWS
... ??????????? ??????. ? ?????? ????? ?????? ???? ???? ???? ??????.(Electrostatic attraction). ? ???? ????? ?? ???? ???? ?????????? (Vandervals process). ? ???? ?? ???? ???? ???? ?????? .(Adhesion). 
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