?????????????????????????????????????**????????????**???????????????????????????????????????????????????????????????????1. ????????????????????????????????????????????• ??????• ??????• ????????????????????????????????????????????21??1?????2. ????????????????????????????????????????????????ISO??????????????????????????3. ?????????????**??**???

An additional health-related use tend to be the mofette, dry spas that use carbon dioxide from publish-volcanic discharge for therapeutic reasons.Miners, who are significantly vulnerable to gas publicity as a result of insufficient air flow, referred to mixtures of carbon dioxide and nitrogen as "blackdamp", "choke damp" or "stythe". Just before mo