Umwanya wemerewe kwishyiriraho Umwanya Kugirango ushyireho ibyuma mubikoresho bigenewe, umwanya wemewe wo kuzunguruka hamwe nibice byegeranye usanga bigarukira muri rusange kuburyo ubwoko nubunini bwikigero bigomba gutoranywa muribi.Mubihe byinshi, diameter ya shaft ...
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