SPHERICAL MODELS 球面模型
There could be any number of reasons this could happen: the models for the gas assume it's spherical and smooth when it may be neither, for example.
这种情况能够发生，一定有很多原因：比如，用于气体估算的模型是球形的，同时也是光滑的，但是气体可能不具有这两个特征。
The mathematical models of the dynamic target and the tested apparatus are constructed with spherical trigonometry spherics.
运用球面三角学，建立了动态靶标与被测仪器间的数学模型；
Calculating models for flat and spherical planetary fixture were developed.
建立了平板型和球面型行星夹具膜厚均匀性的计算模型。
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