[polymerha os0lan ayegh hastand vali ba anjame amaliati r0ye anha be hadie electrisite tabdil mishavand mesle ezafe kardane madehi be name ''dupont '' .
resanayi zatie poly acetylane 1.7*10^-9 baraye isomere cis va 4.4*10^-5 baraye trans ast k ba ezafe kardane dupont.
poly acetylane be rahati...