selectivity filter 中文意思是什麼
selectivity filter
解釋
選擇性過濾器- selectivity : n. 1. 選擇；精選。2. 【無線電】選擇性；選擇度；【物理學】選擇能力；選擇率。
- filter : n 1 濾器，濾紙，過濾用料[砂、炭等]。2 【無線電】濾波器；【物理學】濾光鏡，濾色器。vt 過濾，用過濾...
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In this model, ion conduction involves transitions of three states, with one three - ion state and two two - ion states in the selectivity filter respectively. in equilibrium, the well - known nernst equation is deduced
在這一模型中，離子通道的選擇性過濾器主要處於三個態，一個三離子態和兩個兩離子態，轉導過程用這三個態之間的相互躍遷來描述。 -
By making full use of favourable narrow - band tracing filter character of pll and by combining the merits of dds such as super fine frequency resolution 、 high frequency accuracy 、 very fast frequency hoping with it, the pll / pll + dds frequency synthesizer presents wide band high quality source and super small frequency hoping step. while the electronically tuned filter abates the image interference and notably improves the selectivity. the theorem of frequency synthesizer and center - frequency - fixed filter is simply but adequately introduced first in this paper
課題中所採用的pll或dds pll鎖相頻率合成方法充分發揮鎖相環良好的窄帶跟蹤濾波特性，並結合dds的高頻率解析度、高頻率精確度和高速頻率捷變等優點，分別實現了系統所要求的高質量寬帶本振源和小步長頻率捷變；採用電調諧選頻技術，則大大改善了接收機的選擇性和抗干擾能力。
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