这意味着系统的性质,用以描述系统的性质,不随时间或空间改变。
It means that the properties of the system, the properties that describe the system, don't change in time or in space.
此模型描述系统中的实体及其关系。
It describes the entities in the system and their relationship.
它们在高层次上描述系统的功能。
They describe the functionality of the system at a high level.
It means that the properties of the system, the properties that describe the system, don't change in time or in space.
它的意思是指,用以描述系统的性质,不随时间或空间改变。
So, these on-changing properties that describe the state of the equilibrium state of the system are called state variables.
这些描述,系统平衡态的,变化的属性,就叫做状态变量。
We would think that Milton's contemporaries might be aghast that such a sympathetic portrait of Satan could be used at the beginning of the poem.
我们很可能以为,与弥尔顿同时代的人,看到本诗开头就对撒旦有如此具体系统的描述,定会感到惊骇。
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