I mean that's obvious. The mass, if you double the amount of stuff the mass will double.
这是显然的,还有质量,如果你把系统中物质的,数量增加一倍,质量也会增加一倍。
This is what makes cells different, the number and quantity of the genes that they express.
这就是细胞产生差异的原因,即表达的基因在数量和质量上的差异
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