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山行拼音On simple models for field theories of certain
怎么做梅干菜electron-beam devices
期刊名称： International Journal of Electronics
作者： SNYDER,HERBERT H.
年份： 1975年
期号： 第1期
一丝不挂歌词关键词： New Development, Theoretical or Mathematical/ electromagnetic
fields; modelling; travelling-wave-tubes/ microwave electron beam devices;
transmission line theories; Laplace transforms; Hills equation; field theories;
国防科技大学毕业军衔extant linear theories; slow wave guide/ A4110 Classical electromagnetism
B2350D Travelling wave tubes B5100 Electric and magnetic fields
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摘要：Beginning with a survey of the appropriate literature, the author shows that extant linear theories of phenomena in microwave electron-beam devices are of two types : (a) theories bad upon field-theoretic models, attended by formidable analytical difficulties : and (b) transmission-Line theories, with much simpler mathematical structure, but which (being one-dimensional) do not yield the field vectors. With the aid of a somewhat artificial but geometrically and physically simple new (but non-periodic) model for the slow wave guide (affording very simple boundary conditions), the author defines and develops some properties of field-theoretic models which prerve much of the mathematical simplicity of tranamission-line theories, This is shown, in particular, that theories bad upon his model are in general agreement 堡垒的意思
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