負電度 的英文怎麼說
中文拼音 [fùdiàndù]
負電度
英文
electronegativity-
Dds951 series electronic single - phase electric meter is the most advanced static electronic meter in china. the meter designs use large - scale intergated circuit. high reliability step motor, it can the ac single - phase active energv voltage rating : 220v : frequency 50hz, positive and negative two directions and accumulates in one direction. the test singnal is isolated by phototransistor : it also has the function of anti - fraud, and indicates it s operation situation on flash light, so it could be managed very easy
Dds951單相電子電能表，是金雀儀表公司開發的新型電度表。該產品是採用規模專用集成電路，高可靠性步進電機等先進技術製造的國內最新電能試題新產品，用來計量額定電壓為220v ，頻率為50hz的交流單相有功電能，該產品能夠精確計量正負兩方向的有功電能，且以同一個方向累計。The xrd results confirmed that the nanocomposite oxide has two kinds of material with sno2 and a - fe2o3 ; the uv spectra has more variety with the proportion changing of the two kinds oxide ; the fisps indicated that photoelectric property increased with the adding positive electricity field, and the biggest strength could reach 50 ~ 60 times. with an increment for negative electricity field, the photoelectric property reduced largely
Xrd結果證實了所制備的納米粒子為兩種材料的復合氧化物;紫外可見吸收隨兩種氧化物復合比例的改變有較大的變化; fisps表明復合材料的光伏響應強度隨所加正電場的增加而增加，最大強度可增加50 ~ 60倍，隨所加負電場的增加而大大減弱。Indirectly heated temperature coefficient thermistors
旁熱式負溫度系數熱敏電阻器Amnio acids could promote cac2o4 to crystallize on the ca2 + - rich ( 101 ) axis of com when negative charges were taken on their surfaces. trp, tyr and asp could promote orientation growth of ( 101 ) face of com more and more easily
而當其表面帶負電荷時，則能促進com的（ i0l ）面生長，且caczo ;沿該面取向生長的程度隨色氨酸一酪氨酸~天冬氨酸而增強。Electricity metering - data exchange for meter reading, tariff and load control - part 31 : use of local area networks on twisted pair with carrier signalling
電度表.計數器讀數稅控制和負載控制的數據交換.第31部分:帶有載波信令的雙扭線局域網的使用Power mosfets on - resistance will have a - ve temp coef and not + ve at low current levels. this is important to remember when paralleling devices
功率mosfets導通電阻有負溫度系數，小電流時有正系數。當並聯這些器件的時候記住以上很重要。To prepare international standards for electrical energy measuring and electrical load control equipment ( such as watt - hour meters, var - hour meters, maximum demand indicators, telemetering for consumption and demand, equipment for remote meter reading, time switches, equipment for the control of loads and tarifs and consumer services ) including the equivalent electronic forms of these devices and their accessories
負責制定電能測量和負荷控制設備（如：有功、無功電度表、最大需量指示器、損耗和需量的遙測、遠程抄表設備、時間開關、負荷和費率控制設備及用戶服務等）的國際標準，包括功能相近的運用電子技術實現的設備及其附件。It has high selectivity in adsorpting water, polar molecule or polarizable molecule on account of the existing of mighty coulomb field and polar interaction in the internal of crystal cave of zeolite, the high electric field gradient and the uneven surface caused by the exposure of exchangable cation of equilibrium framework negative charge in framework structures
由於分子篩晶穴內部有強太原理工大學碩士學位論文摘要大的庫侖場和極性作用，再加上骨架中大量平衡骨架負電荷的可交換陽離子的暴露造成的高電場梯度及表面的不均性，使其對水、極性分子及可極化的分子具有高選擇的吸附性能。Numerical simulation results indicate that, for low temperature dust particles, dust particles mainly exist in the area near the column center and their charge - number can be considered as a constant, while in the area where there are no dust particles, ion and electrons are in ambipolar diffusion ; for high temperature dust particles, both the distribution regions of dust particle and high ion density are expanded and dust charge - number is increasing with the distance from the center
計算結果表明：當塵埃粒子的溫度較低時，塵埃粒子主要集中在圓柱形放電器的中心很小的區域，塵埃粒子攜帶的電荷幾乎是一個常數，受塵埃粒子空間電荷的影響，離子在該區域的密度最高。在遠離中心區域，離子和電子呈現雙及擴散特點；當塵埃粒子的溫度較高時，塵埃粒子分佈的區域和高離子密度區域擴大，塵埃粒子離放電器中心越遠，攜帶的負電荷越多。In addition, it is found that dc electric field weakens the effect of release agent and strengthens the binding strength between epoxy resins and anode in the condition of the existence of release agent. but this effect of electric field is not discovered between epoxy resins and cathode
另外，本文通過實驗研究還證實：在有脫模劑存在的情況下，固化過程中直流電場的存在會弱化脫模劑的作用進而強化環氧樹脂固化物與金屬正電極間的粘接強度，但直流電場對環氧樹脂固化物與金屬負電極間的粘接強度沒有明顯影響。Directly heated common negative temperature coefficient thermistors
直熱式普通用負溫度系數熱敏電阻器Directly heated measuring type negative temperature coefficient thermistors
直熱式測溫型負溫度系數熱敏電阻器Components for electronic equipment. directly heated negative temperature coefficient thermistors
電子設備元件.直接加熱負溫度系數的熱敏電阻By static tests, studied the uf characteristics of the uf membranes, which have two kinds of intercept molecular eight, and made from pes, pek, spes and spk ， in treating black liquid from basic straw pulp. the result showed : at the condition of static contacting, the pes and spes spk are polluted by composition of black liquid in a less degree, and the pek is in the heaviest edgree. the sulphonaled membranes with higher negative charge have better uf characteristics of black liquid. the uf membranes characteristics of 20 thousand intercept molecular weight are superior to 50 thousand intercept molecular weight
通過靜態試驗，研究了兩種截留分子量的聚醚碸、聚醚酮、磺化聚碸/聚醚碸、磺化聚碸/聚醚酮等超濾膜處理堿法草漿黑液的超濾特性，結果表明：靜態接觸條件下，聚醚碸及磺化類膜受黑液組份的污染程度較輕，聚醚酮膜的污染程度最重；荷負電性較高的磺化類膜具有較好的黑液超濾特性；截留分子量2萬的超濾膜特性要優於5萬的膜。Based on the energy band characteristics of ordinary negative electron affinity emitter gaas, the design of lengthening the diffusion lengths of negative electron affinity emitter gaas was presented, and the special negative electron affinity emitter gaas was designed
摘要根據通常負電子親和勢二次電子發射材料砷化鎵的能級特點，提出延長負電子親和勢二次電子發射材料砷化鎵的逸出深度的理論設計，設計出了特殊的負電子親和勢二次電子發射材料砷化鎵。Positive electrode and negative electrode that execute spanning crack prevention are simulated as the source point and merged point, so the temperature field owing to the concentration of current around the crack tip is educed at the moment when the current is switch on
將實施跨越止裂時的正、負電極比擬為電流場中的源和匯，從而導出了在瞬間電流作用下，裂紋尖端附近區域因繞流而形成的溫度場。There are five parts are as follows : in part one, the concept of switching function is introduced first to establish the nonlinear mathematical model of the induction motor variable frequency speed adjustment system which is fed by a sine pulse width modulated ( spwm ) inverter and takes the effect of the main magnetic circuit saturation into consideration, then the low frequency oscillation of the system is simulated according to the model. next, from the view point of energy conversion of the inverter - induction system, a criterion for the low frequency oscillation is proposed to determine whether the system is in low frequency oscillation which is judged by whether the interval of the negative current component of the inverter input current is more than 1 / fc ( fc is the carrier wave frequency of the inverter ) or not
首先引入開關函數概念，建立了正弦脈寬調制（ spwm ）逆變器供電異步電動機，考慮主磁路飽和時的變頻調速系統整體數學模型，模擬系統的低頻振蕩；其次從逆變器-異步電動機系統能量轉換角度出發，提出通過檢測逆變器輸入電流中負電流的間隔時間是否大於1 / f _ c （ f _ c為逆變器載波頻率）來判定系統是否出現低頻振蕩；最後的實驗結果驗證了系統低頻振蕩建模和判據的實用性和正確性。Blank detail specification : directly heated negative temperature coefficient thermistors rod type ; german version en 143004 : 1991
空白詳細規范.直接加熱的負溫度系數熱敏電阻Blank detail specification - directly heated negative temperature coefficient thermistors disk type ; german version en 143003 : 1991
空白詳細規范.直接加熱的負溫度系數熱敏電阻Blank detail specification : directly heated negative temperature coefficient thermistors beads in envelopes ; german version en 143002 : 1991
空白詳細規范.直接加熱的負溫度系數熱敏電阻分享友人