イソブチレン
isobuchiren
1. isobutylene
Noun
1. isobutylene
1. It wasn't isobutylene.
1. Isobutylene.
1. Is not isobutylene.; It is not isobutylene.
1. Probably isobutylene.
1. It was isobutylene.
1. It was not isobutylene.
1. Of isobutylene; Relating to isobutylene
1. Wasn't isobutylene.
1. if isobutylene; when isobutylene