- Sleepishugelyimportanttomoodandenergy.Coalseams,likeoilfields,varyhugelyintheirgeology.Suchhostilebehaviorishugelydetrimentaltoahealthyinnovationenvironment.Combinedwithsomemodificationstotheidlefrequency,batterylifedoesnotsufferhugely.Viewsonthedesi...
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