Sisitemu yo gusakara irenze ubuso butwikiriwe na membrane.Abasaba basanga bakeneye gukora hirya no hino, imiyoboro, nibindi byinjira.Aho niho ibikoresho bya WENRUN byateguwe, ibikoresho bifunga kashe hamwe nibikoresho bifunga - kugirango inzira yo gusakara ibisenge idashobotse bishoboka.