Difference between revisions of "Dictionary:Far-field/zh-hans"

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(Created page with "远源场")
 
(Created page with "远离源的场。 球面波包含的项以1 / r和1 / r2的形式减小,其中r是距源的距离(参见Sheriff和Geldart,1995,48)。 远源场表示依赖于1 / r^...")
 
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远离源的场。 球面波包含的项以1 / r和1 / r2的形式减小,其中r是距源的距离(参见Sheriff和Geldart,1995,48)。 远源场表示依赖于1 / r^2的项不重要。 远场表示辐射能量,并表示r≫λ,其中λ=波长。 与近源场相对。
Field remote from the source. Spherical waves involve terms that decrease as both 1/''r'' and 1/''r''<sup>2</sup>, where ''r'' is distance from the source (see Sheriff and Geldart, 1995, 48); far-field implies that the terms that depend on 1/''r''<sup>2</sup> are unimportant. The far-field represents radiated energy and implies that ''r''&#x226B;&#x03BB;, where &#x03BB;=wavelength. Compare [[Special:MyLanguage/Dictionary:near-field|''near-field'']].
 

Latest revision as of 08:08, 10 November 2019

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远离源的场。 球面波包含的项以1 / r和1 / r2的形式减小,其中r是距源的距离(参见Sheriff和Geldart,1995,48)。 远源场表示依赖于1 / r^2的项不重要。 远场表示辐射能量,并表示r≫λ,其中λ=波长。 与近源场相对。