isobutylene उदाहरण वाक्य

उदाहरण वाक्य

1. The abbreviation IIR stands for isobutylene isoprene rubber . "'Polyisobutylene "', also known as " PIB " or polyisobutene, ( C 4 H 8 ) n, is the homopolymer of isobutylene, or 2-methyl-1-propene, on which butyl rubber is based.