零值電位計 的英文怎麼說
中文拼音 [língzhídiànwèijì]
零值電位計
英文
null potentiometer- 零 : Ⅰ數詞1 (零數) zero2 (數的空位) zero sign (0); nought 3 (表示沒有數量;無) nil; nought 4 (...
- 電 : Ⅰ名詞1 (有電荷存在和電荷變化的現象) electricity 2 (電報) telegram; cable Ⅱ動詞1 (觸電) give...
- 位 : Ⅰ名詞1 (所在或所佔的地方) place; location 2 (職位; 地位) position; post; status 3 (特指皇帝...
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
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30 mhz measurement of quartz crystal unit parameters by zero phase technique in a pi - network - part 4 : method for the measurement of the load resonance frequency fl, load resonance resistance rl and the calculation of other derived values of quartz crystal units, up to 30 mhz
用型網路的零相位法測量石英晶體元件參數.第4部分:石英晶體單元負荷諧振頻率fl負荷諧振電阻rl的測量方法及其他石英晶體元件導出值的計算方法At present the manufacture of surface acoustic wave use the technology of the final submicron. a series of the devices of low insertion loss, high q saw rayleigh surface acoustic wave resonators or stws that insertion loss has less than 5db, load quality factor ( ql ) is more than 1000 on the quartz piezoelectric with zero of first temperature factor in the research. these difference frequencies are 60mhz, 280mhz, 739mhz and 1ghz of normal frequency and at also surface acoustic wave. using 1. 25db noise factor amplifier, careful design curcuit, good setting printed curcuit board, and using the 1ghz surface transverse wave resonator as frequency element, researching the low phase noise surface acoustic wave with sideband phase noise near ? 120dbc / hz deviating 1khz on carrier, spurious suppress with 80db
本研究採用一階溫度系數為零的壓電石英基片上製作出損耗小於5db 、有載品值因素( ql值)超過1000的一系列低損耗、高q值聲表面波rayleigh波或stw諧振器,頻率分別為60mhz 、 280mhz 、 739mhz和1ghz等不同頻率的高性能聲表面波諧振器。並採用噪聲系數為1 . 25db的低噪聲系數放大器,精心設計電路,優化設計布置印製電路板,用標稱頻率為1ghz的聲表面波諧振器為頻率控制元件,製作出在偏離載頻1khz處的單邊帶相位噪聲近- 120dbc / hz 、雜波抑制達80db以上的低相位噪聲聲表面波振蕩器。Two perpendicular polarized light states and a no - light state are applied to express information in the ternary optical computer. the three states are transformed via two - dimension liquid crystal element and polarizators, and ternary arithmetic operation and ternary logical calculus completed directly in this way. the ternary optical computer will possess enormously number of bit ( easy to 104 ), light processor, light transmission path and electric control system
三值光計算機用相互垂直的兩個線偏振光和零光強三個獨立的光狀態表示信息;用二維液晶器件和偏振器實現此三個狀態間的轉換;採用三進制算術運算;直接處理三值邏輯運算;擁有巨大的數據位數(容易超過10 ~ 4位) ;具有光運算、光傳送、電控制等結構特色,具有很強的空間、時間并行性。30mhz measurement of quartz crystal unit parameters by zero phase technique in a - network ; part 4 : method for the measurement of the load resonance frequency fl load resonance resistance rl and the calculation of other derived values of quartz crystal units, up to 30 mhz
用型網路的零相位技術測量石英諧振器參數.第4部分:石英晶體元件負荷諧振頻率fl負荷諧振電阻rl的測量方法,以及石英晶體元件其他導出值的計算方法By study, we can know that when one - phase ground fault happens on the line, more far the fault location is from where relays place, more less is the difference of the two zero sequence currents, while hen one - phase ground fault happens on the other line, more far the fault location is from where relays place, more is the difference of the two zero sequence currents
研究表明,當本回線路發生單相接地短路時,在通過公式計算得出的一特定值為正時,離保護安裝處越遠,本回線路零序電流與非故障線路零序電流相位差值越小;當另一回線發生單相接地短路時,離保護安裝處越遠,本回線路零序電流與故障線路零序電流相位差值越大,該值為負時則反之。分享友人