pfd 中文意思是什麼
pfd
解釋
pfd, pfd. ＝preferred. -
Pfd product function definition
產品功能定義 -
Pfd primary flight display
主飛行顯示 -
Pfd impact breaker is a new type of high - efficient breaker mainly used in electricity - generating stations for reduction of coal
Pfd反擊式破碎機為新型破碎機，主要用於電站碎煤用。 -
Fig. 4 response of npq to pfd in control and fe - deficient plants 。 the left side is maize ; the right side is soybean
圖4對照及缺鐵植株非光化學猝滅光化學效率（ npq ）對光強的響應。左側為玉米，右側為大豆。 -
The thesis will emphasize the design of loop circuits which comprise pfd, cp, lp and vco in chap3 - 5, and the analysis of loop performance is also very important
在整個設計過程中，作者針對當前集成電路的低功耗設計趨勢，採用了多種低壓電路結構，使得環路可以穩定的工作在各種採用電池供電的便攜式系統中。 -
The designs of the pfd, digital filter ocxo and fractional - n counter in the frequency synthesizer unit are discussed, based on the pll theory. in order to improve the precision of pll, some design methods of pfd are given, and its feasibility is validated by the fpga hardware implement
2 .在鎖相理論指導下，第三章討論了頻率合成器設計中的鑒頻鑒相器、數字濾波器、恆溫壓控振蕩器和分頻電路設計。為了進一步提高頻率合成的精度，文中給出了提高鑒頻鑒相器性能的一些設計思想，結合fpga的硬體設計驗證了其可行性。
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