物理维度亦称“刺激序列”。是心理物理学测量中，沿某一方向变化（递增或逐减）的某种刺激的一系列强弱不同的物理量。与“心理维度”相对。如，一系列振幅不同的声波即一个物理维度上的量。其变化是连续的。
模型赋予软件物理维度使我们得以更好的了解和表达它的方向。
A model lends a physical dimension to the software that allows us to better understand and communicate its direction.
如果需要对产品大小进行汇总收入，那么可能需要更改模型，用模型中的一个物理维度来替换此属性。
If the revenue is required to roll up for the product size, the model may need to be changed to include replace the attribute with a physical dimension within the model.
小指的是物理维度和其辐射的声波相比很小，或者其外形不会和该点声源指向性响应发生干扰。
"Small" means that the physical dimensions are small compared to the wavelength being radiated or that the shapes do not interfere with the polar response of the point source.
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