легко показать, что

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It is easily (or readily) shown (or easy (or straightforward) to show] (or It can easily be shown) that ...

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Легко показать, что

 One can easily show that very accurate modeling should be achieved if in the model the vent geometry is identical to that of the prototype.

 Noting that equations (...) take the same form at the junction, it is easy to show that w0= ...

 It is readily shown that the strain energy plus the potential energy for such an element is given by ve = ...

 It is readily demonstrated that the critical component is downstream of the inlet at all speeds.

 It is not difficult to show that if the columns of [x(t)] solve equation (...), then the columns of [x(t + T)] also solve equation (...).