更改

::If the system has rigid walls that are impermeable to matter, and consequently energy cannot be transferred as work into or out from the system, and no external long-range force field affects it that could change its internal energy, then the internal energy can only be changed by the transfer of energy as heat:

::If the system has rigid walls that are impermeable to matter, and consequently energy cannot be transferred as work into or out from the system, and no external long-range force field affects it that could change its internal energy, then the internal energy can only be changed by the transfer of energy as heat:

:::如果系统具有不渗透物质的刚性壁，那么能量不能通过做功传入或传出系统，而且没有外部的远程力场影响系统以改变其内能，那么内能只能通过以热的形式进行传递来改变:

::如果系统具有不渗透物质的刚性壁，那么能量不能通过做功传入或传出系统，而且没有外部的远程力场影响系统以改变其内能，那么内能只能通过以热的形式进行传递来改变: