A pyramid provides a useful conceptual model for organizing scientific knowledge. 金字塔給科學(xué)知識的組織提供了一個(gè)有用的概念性模型。
The model researchers have paid more attention to the additive effect models, and run some experiments to test the additivity principle. 加性模型受到研究人員的重視，并對加性原理進(jìn)行了實(shí)際檢驗。
Firstly, an average performance index containing tracking error and control energy over a class of additive model errors is defined. 首先針對一類(lèi)相加模型誤差的描述，定義了一個(gè)平均意義上的包含跟蹤誤差和控制能量的性能指標。
