Keywords: Sistema, frontera i entorn.svg Frontera entre un sistema i el seu entorn System_boundary svg 50 2012-07-27 21 56 UTC System_boundary svg en User Wavesmikey traced by User Stannered derivative work Arnaugir translated to Catalan Arnaugir System_boundary svg PD-user-en PD-user-w Original upload log This image is a derivative work of the following images File System_boundary svg licensed with PD-user-en PD-user-w 2008-01-09T20 40 28Z Stannered 931x818 4372 Bytes <nowiki> The boundary between a system and its surroundings en Image System-boundary jpg 2008-01-09 en User Wavesmikey traced by User Stannered W</nowiki> Uploaded with derivativeFX Systems theory diagrams Thermodynamic systems |