由于上述两种情况给出完全同样的结果，我们相信叠加原理对于电子波也能适用。
As the two cases give identical results we believe that superposition holds for electron waves also.
活载作用下结构挠度、应力与荷载呈线性关系，叠加原理能够适用。
The deflection and stress of the structure are linear with load under effect of live load. The superposition principle can be used.
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