The matter flow must be produced in the way in which the stands exchange energy and matter with the energy flow of the external environment.
这种“物质流”必定是与外界环境的“能量流”进行能量、物质交换所产生出来的。
The matter flow must be produced in the way in which the stands exchange energy and matter with the energy flow of the external environment.
这种“物质流”必定是与外界环境的“能量流”进行能量、物质交换所产生出来的。
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