用户可以使用表中任意的列组合构造虚拟列，然后依次分析那些虚拟列。
Users can construct virtual columns from any combination of columns within a table and then analyze those virtual columns in turn.
选取薄板弯曲控制微分方程的24类特解序列组合构造挠度试函数。
The deflection trial function is formed by the 24 kinds of particular solutions of the elastic plate _bending control differential equation.
早、中侏罗世形成的正断层组合构造样式，可形成一些小规模油气藏。
The structural pattern of the normal fault assemblage that occurred in the Early and Middle Jurassic may have initiated some small-scale petroleum and gas pools.
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