狹頻波 的英文怎麼說
中文拼音 [xiábīnbō]
狹頻波
英文
sharp wave-
These unusual densities of states were due to the discrete propagation modes peculiar to the photonic crystal composed of alternative left - handed and right - handed materials, and could be used to make very narrow filters totally different from any conventional types of filters
這些禁帶中的態密度是由左右手材料構成的一維光子晶體所特有的，它們可用於製造完全不同於常規濾波器的、頻帶狹窄的新型濾波器。A large proportion of the bat ' s auditory receptors ( hair cells in the cochlea ) and large areas in the bat ' s brain are devoted to analyzing a narrow frequency range corresponding to a single harmonic of the returning echo
蝙蝠用很大一部分的聽覺受器（耳蝸中的毛細胞）與大幅的腦部區域，來分析一段?圍狹窄的頻率，該頻率正與回聲的一個諧波相符。The thesis mainly deals with the third part of across : " sompi " cepstrum methods. the principle and system structure of across a re first introduced. the propagation of wave in media is simply studied and its transfer function in frequency domain is modeled as superimposed damped exponential sinusoids, each damped exponential sinusoid is called as a wave element and its exponential index part consists of two factors : group velocity travel time and decayed factor
為此，首先介紹了across的原理與組成和通過簡單地討論地震波在介質中的傳播情況建立起介質的傳遞函數模型，指出：在一個狹窄的頻率窗口裡，介質的傳遞函數可以用有限個阻尼正弦項的疊加的形式表示，每個阻尼正弦項代表一個波成分，其指數部分包括兩個因子：波成分在介質中的傳播時間和衰減因子。
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