閾電平 的英文怎麼說
中文拼音 [yùdiànpíng]
閾電平
英文
threshold level-
Results show that threshold voltage uniformity of mesfet fabricated in planar selectively implanted process is better than that of in recessed - gate process
結果表明，採用平面工藝制備的gaasmesfet閾值電壓均勻性比採用挖槽工藝制備的gaasmesfet閾值電壓均勻性更好。In order to study the influence of different process on the threshold voltage uniformity, gaas mesfets are fabricated both in recessed - gate process and planar selectively implanted process
分別對採用隔離注入挖槽工藝和平面選擇離子注入自隔離工藝制備的gaasmesfet閾值電壓均勻性進行了比較研究。We also studied some characteristics of sidagating effect using mesfet fabricated in planar boron implanted process including photosensitive, hysteresis, influence of sidegating effect on mesfet threshold voltage, influence of drain - source voltage on sidegating threshold voltage, influence of exchanging drain and source electrode on sidegating threshold voltage, relation between sidegating threshold voltage and the distance between side - gate and mesfet, relation between sidegating effect and floating gate, and so on
本文還採用平面選擇離子注入隔離工藝，開展了旁柵效應的光敏特性、遲滯現象、旁柵效應對mesfet閾值電壓的影響、 mesfet漏源電壓對旁柵閾值電壓的影響、漏源交換對旁柵閾值電壓的影響、旁柵閾值電壓與旁柵距的關系、旁柵效應與浮柵的關系等研究。The aim of this study is to investigate theoretically the possibility for activation of small mammalian myelinated nerve fibers without activating larger ones when stimulating a nerve fiber bundle with a monopolar point electrode using biphasic pulses, which can reduce the electrochemical damage resulted from stimulation pulses to nerve fibers. a simulation system for studying the electrical properties of mammalian myelinated nerve fibers was built based on a simple infinite and homogeneous volume conductor model. by use of an asymmetric but charge - balanced stimulation waveform, the sensitivity of excitation and blocking threshold of nerve fibers to fiber diameter, electrode - fiber distance was calculated. the results show that selective activation of small mammalian myelinated fibers may be possible in a region at some distance from the electrode using biphasic pulses
本研究的目的是要從理論上探討利用單電極雙向脈沖刺激實現哺乳動物神經纖維選擇性刺激， （即當刺激一束神經時，不興奮粗神經而興奮細神經）的可能性.雙向脈沖刺激可以降低刺激脈沖對神經纖維產生的電化學損傷.為研究哺乳動物有髓神經纖維的電特性，建立了一個基於簡單的無窮大、各向同性的容積導體模型的模擬系統.利用該模擬系統，採用「不對稱但電荷平衡」的雙向脈沖刺激，計算了神經纖維的興奮和阻斷閾值與纖維直徑、纖維-電極間距離的關系.結果表明：在距電極一定距離內採用該雙向脈沖刺激模式確實可以實現哺乳動物有髓神經纖維的選擇性興奮This paper mainly accomplished the following research : summarize the classify and application fields of four - probe testing technology ; take the square four - probe testing technology study by using the advantage of rymaszewski method in auto - eliminating the portrait wandering influence to induct ry method to square - probe testing method ; deeply study the influence of probe wandering to progressed ry method testing result ; complete the design of testing panel and testing circuit, realize the auto - testing of mono crystal wafer ; discuss the image enhancement and threshold selection problem in image identify, and finally accomplish the identify of probe pinpoint. the main new view points of the research : 1. it is the first time for applying image manipulation and analysis technique to the sheet resistance measurement, and achieving the auto - location function of the probe
為此，本文開展了以下研究工作：綜述了四探針技術的分類以及應用范圍；對方形四探針測試技術進行了研究，利用rymaszewski法自動消除探針縱向游移影響的優點，將它應用於方形探針測試法中，並對探針游移對改進rymaszewski法測試結果的影響進行了深入探討，提出了用圖像識別技術監測測試進行的方法；完成了測試系統的測試平臺以及測試電路的設計，研製出具有圖像識別功能的斜置式方形探針分析儀一臺，實現了矽片電阻率測試的自動化；對圖像識別過程中涉及到的圖像增強和閾值選擇問題進行了論述，最終實現了對探針針尖的圖像識別以及探針測試結構的自動調整，保證了方形探針測試儀的測試精度。Based on the electromechanical coupling characteristic of the multi - machine power system, the transitive closure is calculated depending on the synchronization torque coefficient matrix. then a proper threshold value is chosen to achieve the reasonable block decoupling of multi - machine power system. eigenvalues of block - decoupling subsystem are calculated respectively
該方法根據多機電力系統的機電耦合特性，在多機系統同步力矩系數矩陣的基礎上，求取傳遞閉包，通過選擇適當的閾值水平，實現多機系統的合理分塊解耦；對各分塊解耦子系統分別計算特徵值，各子系統的特徵值的集合可以近似作為原多機系統的特徵值。Second, introduce the dyadic wavelet analysis, and use it realized the signal monitor and analysis to the turbine compressor, obtained the detail signal and approach signal at different frequency parts of the compressor s original signal. one type of electromotor that made in china is choose, and it s noise is tested. the noise signal is analyzed by wavelet analysis and spectrum analysis. several high spectral peaks that make people hearing disameniry are found. by contrast with theory calculating results and farther analysis. the cause that producing these spectral peaks is located
其次，介紹了二進小波分析，並應用二進小波分析實現了對透平壓縮機信號的監測分析，得到了壓縮機原始信號在不同頻率段分解的細節信號和逼近信號。用小波分析和譜分析相結合的方法對某國產電機的噪聲進行了分析，找出了人的聽閾不閱的幾個高譜峰位置，進行了空氣動力噪聲計算，通過與理論計算結果進行對比分析，進一步找出了產生該頻閩譜峰的幾個原因，第三，介紹了諧波小波和分形的基本原理。The fg nanosheets tend to orient along the horizontal direction during the fabricating procedure, resulting in anisotropic conductivity in the nanocomposites, while for different directions of measurements the values of the percolation threshold are nearly identical, only about 0. 75 percent by volume, much lower than conventional conducting fillers
石墨薄片傾向于沿著水平面方向在尼龍基體中進行一定的取向，因此制得的尼龍6納米石墨納米復合材料顯現出電導的各向異性。但對該體系，在不同方向達到導電滲濾閾值所需的石墨納米薄片均為大約0 . 75的體積含量。Vth threshold voltage
閾值電平The first one references the principle and methods of small aperture beam technique. the sr measurement of aero - flow medium which fit the quasi - frozen - flow assumption was analyzed. the second measurement the deflection of s - h sensor ’ sub - aperture wave - front, according to spectrum calculation, sr can be gotten also
特別注意在實踐中具有操作意義的關鍵方法:設置一定閾值電平后，背景電平和讀出噪聲的影響可以降低，從而提高質心探測精度，在實踐中可以找出一個最佳閾值。A gaas threshold voltage automatic measurement system is designed. the sample may be 2 ", 3 " wafer. it can save the data, statistic average value and standard deviation of threshold voltage, map the gaas threshold voltage
本文建立了一套閾值電壓自動測試系統，可對半絕緣gaas單晶上製作的mesfet器件的閾值電壓進行自動測量，並給出閾值電壓的測量數據，作出閾值電壓的mapping圖，計算閾值電壓的統計平均值、標準偏差等。The study in aged - dependent physiological threshold with the motor evoked potentials of transcranial magnetic stimulation
經顱磁刺激運動誘發電位閾值與年齡及皮層功能水平的關系分享友人