顯性信元率 的英文怎麼說

中文拼音 [xiǎnxìngxìnyuánlǜ]
顯性信元率 英文
ecr explict cell rate
  • 顯 : Ⅰ形容詞1 （明顯） apparent; obvious; noticeable; evident 2 （有名聲有權勢的） illustrious and inf...
  • 性 : Ⅰ名詞1 （性格） nature; character; disposition 2 （性能; 性質） property; quality 3 （性別） sex ...
  • 率 : 率名詞（比值） rate; ratio; proportion
  • 顯性 : [生物學] dominance顯性性狀 dominant character; 顯性修飾因子 dominigene; 顯性遺傳 dominant inheritance
  1. This study showed that the mt and sharpness of frequency tuning curves increased as the sound direction changed from contralateral to ipsilateral azimuthal angles. it suggests that sound direction effect on frequency tuning may be through the complex interplay between the excitatory and inhibitory inputs. the application of gaba ( a ) antagonist, bicuculline, lowered all mts but the application did not abolish direction - dependent variation in mt

    聽皮層的抑制性影響使大多數神經元在蝙蝠最敏感的聲源方位c - 40的頻率分辨能力明顯提高，同時使c - 40和i - 40的最低閾值的差別進一步增大，提高了信噪比，提高下丘聽神經元對聲源方位和最佳頻率的分辨能力。
  2. ( 3 ) study deeply the structure of fat 16 file system and the characteristic of flash disk, and develop the file management software of flash disk to manage nc files effectively according to the management idea of fat 16 file system. ( 4 ) research the module and protocol of reliable communication in serial network, which are composed of arm main control board, dsp motion control board, keyboard board, i / o control board and encoder signal collection board, and then develop communication software of the serial network. ( 5 ) study the principle of displaying char in lcd and the method of embedding font library into operating system, and research deeply the method of embedding chinese font library into os in the light of the characteristic of chinese

    本論文的主要研究內容如下： （ 1 ）研究uc os -實時嵌入式操作系統在硬體平臺上的移植及其佔先式內核的任務調度原理，合理分割銑床控制系統的管理任務，根據任務的要求賦予不同的優先級和調度時間，保證任務的執行效率和實時性； （ 2 ）開發底層設備驅動程序和應用程序介面（ api ）函數，以便於進行系統應用軟體的開發； （ 3 ）深入研究fat16文件系統的結構和固態盤的硬體特性，參照fat16文件系統的管理思路，開發固態盤文件管理軟體以有效管理nc代碼文件； （ 4 ）深入研究由arm主控板、鍵盤板、 i o控制板、編碼器信號採集板等裝置組成的串口通訊網路可靠通信的模型及其通訊協議，開發串口通訊網路通信軟體； （ 5 ）研究字元的顯示原理和在操作系統中嵌入字庫的方法，在此基礎上結合漢字的特性深入研究中文字庫的嵌入方法，開發中文字庫嵌入軟體，滿足開發操作界面的信息要求； （ 6 ）深入研究三維圖形坐標變換的原理，開發實用的三維加工軌跡顯示軟體，便於操作者對零件的加工過程進行監控和診斷。
  3. The signal generator of sweep frequency is based on dds device ad9954, the signal measuring circuit is based on gain and phase detector ad8302, the real - time control and deal circuit is based on tms320vc5409, and the periphery interface circuit is based on at89s52. the system can generate sweep frequency signal with the frequency range from 100khz to 150mhz, and with the power range from - 45dbm to + 18dbm. it can measure the gain and phase of the network, display the measure data by liquid crystal displayed and print it by the printer

    該測試儀以dds晶元ad9954為核心構成掃頻信號源電路，以增益相位檢測器ad8302為核心構成檢測電路，以dsp晶元tms320vc5409為核心構成控制與運算電路，以及以at89s52為核心構成外圍介面電路。該測試儀能產生頻率范圍達100k ~ 100mhz ，功率范圍為- 45dbm ~ + 18dbm的掃頻信號，能對被測網路的頻率特性進行測量，並留有豐富的外圍介面，可以將測量數據繪圖通過lcd顯示或者由印表機列印輸出。
  4. Is a vesa standard data format that contains basic information about a monitor and its capabilities, including vendor information, maximum image size, color characteristics, factory pre - set timings, frequency range limits, and character strings for the monitor name and serial number

    是一種vesa標準數據格式，其中包含有關監視器及其性能的參數，包括供應商信息、最大圖像大小、顏色設置、廠商預設置、頻率范圍的限制以及顯示器名和序列號的字元串。
  5. In the design of hardware, frequency sweep signal is based on dds + pll. by the control the singlechip c8051f060, ad9852, the dds chip, can achieve stepped frequency signal. with amplifying and detector circuits, the instrument can achieve the measurement and receiving of amplitude frequency characteristic result. by means of pdiusbd12 finish the usb1. 1 protocol conversion, communicate with usb interface of pc, the instrument give the measurement resul of amplitude - frequency characteristic in lcd of pc

    硬體方面，掃頻信號源基於dds + pll的技術，由c8051f060單片機控制dds晶元ad9852實現頻率步進。再加上外圍放大、檢波等電路，測量和接收幅頻特性。並藉助于pdiusbd12完成測量數據usb1 . 1協議轉換，實現與pc機的usb介面通信，將幅頻特性測量結果在pc機的液晶顯示屏上表達出來。
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