Thus the topology model, which represents the analytical state of the it system or its piece, may not be able to express all of the capabilities or requirements (or even the members) of that unit.

于是这个代表这个IT系统或者它的一部分分析状态的拓扑模型，可能就不能表现那个单元的所有性能或者需求(或者甚至是成员)。

youdao

In addition, the system can also forecast the danger state of certain unit by grey prediction theory.

除此之外，本系统还可以用灰预测理论对某一单元的危险状态进行预测。

youdao

According to the theory of areal economy system, the state of an areal economy unit can be expressed with the features of time series of the economic development and spatial structure.

依据地域经济系统理论，一个地域经济单元状态，可以从时序特征和空间结构特征进行表达，其存在状态受制于时空关联性。

youdao

But improving these tools has been slow going, largely because the higher-education lobby has fought federal efforts to create a "unit-record" system that could work across state lines to link students' educational and employment histories.

WSJ: Are Bachelor's Degrees Worth It?