磁導 的英文怎麼說
中文拼音 [cídǎo]
磁導
英文
flux guide-
Measuring method for demagnetized state permeability of microwave ferrite materials
微波鐵氧體材料退磁態磁導率的測量方法It is evident that the permeability is not a constant.
顯然磁導率不是常數。Fortunately, iron or iron alloys are available which combine high permeability with small hysteresis loss.
幸而，目下已有兼備高磁導率和低磁導率損耗的鐵和鐵合金，可資利用。Standard test method for ac magnetic permeability of materials using sinusoidal current
正弦電流用材料的交流磁導率的標準試驗方法Magnetic materials - methods for the determination of the relative magnetic permeability of feebly magnetic materials
磁性材料.弱磁性材料的相對磁導率的測定方法Aerospace series - elements of electrical and optical connection - test methods - part 513 : magnetic permeability
航空航天系列.光電連接件.試驗方法.第513部分:磁導率Magnetic materials. specification for steel sheet and strip with specified mechanical properties and magnetic permeability
磁性材料.鋼片和鋼帶規定的機械性能和磁導率規范Test method for measuring relative complex permittivity and magnetic permeability of solid materials at microwave frequencies
測量微波頻率下固體材料相對復合電容率和磁導率的試驗方法The refractive index of a substance is determined by two properties known as the electrical permittivity and the magnetic permeability
物質的折射率由兩項性質決定，分別是介電常數和磁導率。Standard test method for measuring relative complex permittivity and relative magnetic permeability of solid materials at microwave frequencies
微波頻率下固體材料相對復介電常數和磁導率測量標準試驗方法Symmetrical double yoke permeameter magnetic bridge
對稱雙軛磁導計Standard test method for measurement of hydraulic conductivity of porous material using a rigid - wall, compaction - mold permeameter
使用剛性壁壓縮模式磁導率計測量多孔性材料液壓導電率的標準試驗方法Test method for d - c magnetic properties of materials using ring and permeameter procedures with d - c electronic hysteresigraphs
使用d - c電子磁滯曲線記錄儀響鈴和磁導儀程序的材料的d - c磁化特性測試方法Bendtsen air permeance of paper and board - method for determination of air permeance using the bendtsen apparatus
紙和紙板的空氣磁導.使用本森The high permeability of the ferromagnetic reeds in a reed relay causes a pronounced skin effect with increasing signal frequency
干簧式繼電器中鐵磁簧片的高磁導率會隨信號頻率的增加而產生很強的趨膚效應。Having investigated composites of ep coating ultramicro iron using atpu as surface agent, results showed that with increasing amount of atpu, density, complex permittivity ( ) and complex permeability ( ) of composites decreased, and retentivity and coercivity increased
用atpu作表面活性劑制備核殼結構復合粒子時，隨著復合時atpu用量的增加，復合粒子的密度、復介電常數（ ）和復磁導率（ ）逐漸減小，剩磁與矯頑力逐漸增大。The higher temperature, the more fe ( co ) 5 decomposed in the gaseous phase. when the temperature was raised to 150, the thermolysis entirely happened in gaseous phase and the particles of 2 - 4um formed in long chains. with long chains broken, the plural relative permittivity ( e ", e " ) drop and plural magnetic permeability ( u ", u " ) rise
恆溫滴加法受溫度影響顯著，隨著溫度的升高，發生在氣相中的熱分解量增加； 150下fe （ co ） _ 5完全在氣相中分解，產物為2 4 m的微粒形成的鏈狀結構，這種鏈狀結構的破壞有利於復介電常數（ 、 ）的降低、復磁導率（ 、 ）的提高。The raw materials, the composition, the time of milling, the calcining temperature, the different additives, the sintering temperature and the sintering parameters were investigated. the result showed : it was advantaged to obtain high initial permeability mnzn ferrite with stable frequency characteristic using high - purity raw materials ; in order to obtain mnzn ferrite with high properties, we must control strictly the composition ; it could improve the properties of mnzn ferrite by optimizing calcining temperature. the lower calcining temperature made the permeability higher, and the higher calcining temperature could promote the frequency characteristic of permeability ; we chosen the right time of milling according to the requirement of power diameter ; in order to improve the properties of mnzn ferrite, it is necessary to add effective additives. in this dissertation, the influence of bi2o3 、 moo3 、 k2co3 、 co2o3 were investigated ; the sintering temperature, the time of heat - retaining and sintering parameters were the key factors of preparing high permeability mnzn ferrites
研究結果表明:採用高純度的fe2o3有利於獲得高起始磁導率且頻率特性優良的鐵氧體;為了制備所需性能的鐵氧體，需要嚴格控制配方中各種原材料的含量，優化配方;由於粉體活性受預燒條件的影響，所以對不同要求的鐵氧體選擇的預燒條件就不一樣，適當降低預燒溫度有利於獲得較高的起始磁導率，而為了獲得良好的頻率特性可以適當地提高預燒溫度;根據對粉體顆粒粒徑的不同需求，可以選擇不同的球磨時間;而有效的添加劑是改善材料性能的必要條件，本文在添加劑的研究中主要對bi2o3 、 moo3 、 k2co3 、 co2o3的影響分別作了詳細地討論;燒結溫度、保溫時間和燒結氣氛是高磁導率mnzn鐵氧體制備最關鍵的工藝，適宜的燒結工藝可以獲得理想微結構和組成，從而得到高性能的鐵氧體材料;而從材料的微結構上來看，要提高材料的截止頻率，就要適當地細化晶粒、增加晶粒內部的氣孔。In the anistropic magnetic medium under the condition of magnetic permeability 11unequal to 33, the magnetic field on axis line of current - carrying coil and that inside current - carrying solenoid can be calculated by applying biot - savart law of that medium. as the condition of their service is restricted, it is necessary to derive the magnetic field on axial line of current - carrying coil and that inside current - carrying solenod under more general condition of 11unequal to 33. on the basis of the magnetic field on axial line of current - carrying coil in anisotropic magnetic medium under the derived condition of 11unequal to 33, the authors obtain the magnetic field on axial line of current - carrying solenoid in anisotropic magnetic medium under general condition of 11unequal to 33. the result shows a wider applicable coverage
利用畢奧-薩伐爾定律，並在磁導率11 = 33的條件下，可求出各向異性磁介質中載流圓線圈軸線上的磁場，以及載流直螺線管內部的磁場.顯然，其使用條件受到限制.為此，有必要導出在11 33的更一般情況下，各向異性磁介質中載流圓線圈軸線上磁場和載流直螺線管內部的磁場.在已導出11 33及各向異性磁介質中載流圓線圈軸線上磁場的基礎上，求出一般情況下各向異性磁介質中載流圓線圈軸線上的磁場，使其結果適用范圍更廣Based on the special property of magnetic fluid ( mf ), we fill the magnetic fluid into the working clearances of the servo valve torque motor. one side, the magnetized magnetic fluid can exert a damping torque on the torque motor armature and reduce vibration of the armature ; on the other side, it can improve the magnetic circuit efficiency of the torque motor because of the magnetic fluid ’ s larger magnetic permeability
基於磁流體所具有的特殊性質，將磁流體添加到伺服閥力矩馬達的工作間隙中，一方面磁流體被磁化后可增大銜鐵的阻尼力，減少振動;另一方面由於力矩馬達氣隙中磁導率的提高，使氣隙中的磁通量增大，力矩馬達的磁路效率和輸出扭矩將增大，因此可以提高力矩馬達的固有頻率和伺服閥的響應速度。分享友人