磁位降 的英文怎麼說
中文拼音 [cíwèijiàng]
磁位降
英文
magnetic potential drop-
It is believed that three northeast - striking dextral slip fault zones, i. e. the baxian - shulu - handan fault zone, the huanghua - dezhou - dongming fault zone, and the linyi - huanghekou fault zone, are the result of the tectonic transform of paleogene extending to neogene - quaternary laterally slipping of north china plain rift systems, which extend along the central axis of rifts and accord with the quaternary centers of subsidence as the main seismic structures within the rifts
認為壩縣束鹿邯鄲斷裂帶、唐山河間磁縣斷裂帶和黃驊德州東明斷裂帶3條北東向右旋走滑斷裂帶為華北平原裂谷系從早第三紀伸展拉張作用進入晚第三紀第四紀走滑剪切拉張作用的產物，這3條斷裂帶分別位於3個北東向坳陷帶中部，並構成了第四紀沉降中心，與營口濰坊斷裂帶起構成華北平原內的主要強震構造。The algorithm of svpwm that is adopted by the system implements motor speed - regulation by control of magnitude and phase of motor flux. it can generate less harmonics in the output current of power inverter and less losses of ac motor, reduce pulsant component in output torque and raise availability of dc supply voltage
系統採用的svpwm演算法通過對空間磁鏈矢量幅值和相位的控制來調節電機轉速，減少了逆變器輸出電流的諧波，降低了脈動轉矩，提高了電壓的利用率。The result shows that with the addition of rare earth elements, ultrasonic irradiation and magnetic field, the chemical component, surface configuration, microstructure and properties of electroless co - ni - b and co - fe - b alloy changes remarkably. such kind of change can be described as the followings. firstly the depositing speed of electroless alloy bath is raised while the polarizability and cathodic overpotential are reduced ; secondly the surface quality of the alloy coating and adhesion of the coating and matrix are improved ; thirdly in the coatings the content of the elements in the transient group increases, but the content of cobalt decreased ; fourthly the amorphous structure is transformed to microcrystal structure and polycrystal structure ; fifthly the microhardness and wear resistance of the coating are enhanced ; sixthly coercitive force is reduced, and magnetoconductivity of the coating is increased ; lastly the magnetic intensity of the coating increases with the addition of energy and light rare earth elements such as ce, la and decreases with the addition of heavy rare earth elements such as y. on the other side, when the alloy coatings passes through the heat treatment under the temperature of 250 or 500, their properties will change
結果顯示化學沉積co - ni - b 、 co - fe - b工藝在稀土元素（ ce 、 la 、 y 、 dy ） 、能量（超聲波、磁場）介入后，沉積過程、合金成分、鍍層形貌結構和性能都有顯著變化，表現在：鍍液的陰極極化過電位和極化度降低，沉積速度提高；鍍層的結合力、表面質量改善；鍍層中過渡族元素的含量增加，輕元素硼的含量降低，同時證實了稀土元素與過渡族元素共沉積的可能性；鍍層的顯微結構由非晶態向微晶和多晶態轉變；鍍層的顯微硬度與耐磨性提高，力學性能優化；鍍層的矯頑力降低；磁導率提高；鍍層的磁化強度在能量（超聲波、磁場）和輕稀土元素ce 、 la介入后提高，重稀土元素y介入后降低。A very important one is the intersystem prediction and analysis of electromagnetic compatibility to the radio systems in this electromagnetic environment. this paper presents research on the intersystem prediction and analysis of electromagnetic compatibility to the radio systems positioned by the geographical longitude and latitude coordinate system and the elevation system. it can give assistant solution to the interference among the radio systems so as to avoid functional degradation and even failure after the systems disposed and mounted and the money and time wasting
本文對處于陸上局部區域內的、以經緯度地理坐標系和高程系進行定位的無線電系統間的電磁兼容性預測進行了研究，以對系統間的相互干擾情況作出預測，給解決局部區域中無線電系統間相互干擾問題的方案提供支持，以避免在系統布置、安裝完成之後出現相互干擾情況而使系統性能下降，甚至失效，造成資金和時間的浪費。An iron - containing material with an iron grade of over 20 % can be recovered from magnetic separation tailings of liuling iron mine by gravity method. this material can be used instead of partial clayey material to produce portland cement so as to reduce the mine tailings discharge amount to 43. 52 %, to raise the iron recovery from 70. 89 % to 84. 62 % and to reduce the iron ore powder consumption in raw cement mixture and the energy consumption of raw material grinding
用重選法從劉嶺鐵礦磁選尾礦中回收鐵礦物，可獲得鐵品位大於20 %的含鐵物料，用此物料代替部分粘土質原料生產硅酸鹽水泥，使礦山尾礦排放量減少至43 . 52 % ，鐵的回收率由70 . 89 %提高到84 . 62 % ，並且減少了水泥生料配料中鐵礦粉的用量，降低了生料粉磨能耗。This product basis physics ， bionics and the resistance induction of human body survey theory ， and combination plenty of clinical practices develop development ， it is attacked that this product not only has to bang, needle jiu ， massage, fiery jar, scrape sha ， the 6 big functions of traditional chinese medicine such as massage pattern and step - down, geng the comprehensive prescription patterns such as shoulder and waist leg beautiful body, and more have acupoint alone to seek, electricity jiu the functions such as therapy
該產品根據物理學、仿生學、人體電阻感應探測理論、生物電學、中醫針灸學、磁療共振學、中國古典醫學及現代微電子技術，並結合大量臨床實踐而研製開發的，該產品不但具有捶擊、針灸、推拿、火罐、刮痧、按摩等六大中醫功能模式和降壓、頸肩、腰腿美體等綜合處方模式，而更獨有穴位查找、電灸療法等功能。For missile, either strategical or tractical, the most important thing is to attack the target accurately. this depends upon the accurate location of the larget by the missile radar. for protecting radar antenna from external environment and for air - dynamical requirement, a radome is used to enclose the antenna. but the radome interferes in the orientation of the antenna, degradaties its perfor - mance, decreases the power reaching the target, and most importantly, it produces so called boresight error ( bse ) that is, makes the antenna shows a slightly different direction of the target from its true direction, the boresight error is define as the angle shifted, and the boresight error slope ( bses ) is defined as the ratio of angle shift to the tracing angle of the radar antenna. to predict the boresight error and boresight error slope is an unavoiding chief task in designing radome and in its operation
在戰略和戰術雷達制導導彈中，一項重要的工作就是對目標的準確跟蹤，這取決于導彈雷達對目標的準確定位。為了保護雷達天線不受外界環境的影響，天線罩被應用進來，但天線罩在保護天線不受外界惡劣環境影響的同時對天線電磁輻射產生某些干擾，使天線的電氣性能降低，影響天線的功率傳輸，更重要的是產生瞄準誤差。它使目標的視在位置與真實位置有一個角度差，這個角度差就是天線罩的瞄準誤差。Then a thorough analysis to the bias - magnetic of ppfc is made. the retraining effects of the main parameters ( include clamping capacitance c, output filter inductor lf, load r, the leakage inductor ls and source winding resistance r ) are studied under the conditions of different von, different ton and different winding parameters. then a conclusion can be drew, that the smaller lf and the bigger r are, the better the bias - magnetic is restrained and c has a best value to retrain the bias - magnetic
分別對管壓降不同，導通時間不同以及兩原邊繞組參數不一致（包括漏感、電阻、激磁電感三種情況）的情況下，主要參數（包括箝位電容c 、輸出濾波電感lf 、負載r 、原邊繞組漏感ls 、原邊繞組電阻r ）對偏磁的抑制作用進行了模擬分析研究，得出lf越小， r越大時激磁磁勢偏移量ni越小， c在其他參數確定時對抑制偏磁有最優值等結論，為參數的優化設計提供了依據。Abstract : an iron - containing material with an iron grade of over 20 % can be recovered from magnetic separation tailings of liuling iron mine by gravity method. this material can be used instead of partial clayey material to produce portland cement so as to reduce the mine tailings discharge amount to 43. 52 %, to raise the iron recovery from 70. 89 % to 84. 62 % and to reduce the iron ore powder consumption in raw cement mixture and the energy consumption of raw material grinding
文摘:用重選法從劉嶺鐵礦磁選尾礦中回收鐵礦物，可獲得鐵品位大於20 %的含鐵物料，用此物料代替部分粘土質原料生產硅酸鹽水泥，使礦山尾礦排放量減少至43 . 52 % ，鐵的回收率由70 . 89 %提高到84 . 62 % ，並且減少了水泥生料配料中鐵礦粉的用量，降低了生料粉磨能耗。In order to decrease the cost, simplify the structure of the pmsm servo system and at the same has no effect on the system performance, this paper uses hall element as the position sensor, which has very low solution but very low cost, and in order to realize sinusoidal current drive of pmsm, this paper presents a new rotor position estimator based on flux estimation
為了降低成本，簡化系統，本文採用低解析度的霍爾元件作為pmsm伺服系統的位置傳感器，採用基於磁鏈觀測法的低解析度位置傳感器控制技術，來估計電機轉子的實時位置和轉速，實現電流的正弦換向，減小轉矩脈動。The experiments showed us : firstly, mediums with different magnetic and dielectric properties had different influence on the microwave - absorbing properties of spinel ferrite ; secondly, magnetic texture treatment greatly affected the microwave - absorbing properties of the spinel ferrite - based mixed material which contained single - domain particles of hexagonal ferrite, changing the matching thickness, the density of area and the position of absorption peaks and increasing the absorption quantity and the 10db bandwidth ; thirdly, the coupling effect between different layers affected the microwave - absorbing properties of the double - layer spinel ferrite - based mixed material, decreasing its matching thickness and density of area and increasing the position of absorption peaks
實驗發現： （ 1 ）不同磁性與電性的介質對尖晶石型鐵氧體吸波特性的影響不同； （ 2 ）磁織構化處理對含有六角晶系鐵氧體單疇顆粒的尖晶石型鐵氧體基混合吸波材料的性能影響很大，可以改變匹配厚度、面密度與吸收峰峰位，提高吸收量與10db帶寬； （ 3 ）對于雙層材料，層間耦合作用會影響其吸波性能，降低匹配厚度與面密度，提高吸收峰峰位。In order to minimize the torque ripple of srd, the dissertation further design the intelligent torque control system, introduce the instantaneous torque control strategy based on torque distribute function, which is implemented by the flux linkage controller of srm. furthermore, considering the multi control parameter, the article also found the rotor position angle controller based fuzzy logic so as to optimize the whole control system and effectively reduce the torque ripple
為了降低srd系統的轉矩脈動，本文在所建模型的基礎上，設計出智能化轉矩控制系統，利用轉矩分配函數，提出瞬時轉矩控制策略，同時採用磁鏈控制器來實現；考慮到srd具有可控參數多的特點，本文同時建立了優化轉子位置角的模糊控制器來達到智能化轉矩控制的目的，從而有效抑制sr電機的轉矩脈動。Secondly, the influence of temperature and the number of qubits to the entanglement is discussed in the frame work of quantum heisenberg xx model., the results show that the parity of the number of the qubit has the great influence to the properties of the entanglement. for the odd qubit system, the entanglement does n ' t exist in the anti - ferromagnetic region, and the critical temperature increases with the increase of the numbers
其次，以heisenbergxx鏈為模型，研究了多體情況下溫度和量子位數對糾纏的影響，結果表明，量子位數的奇偶性對糾纏的性質有顯著的影響，奇量子位系統在反鐵磁區不存在對糾纏，且糾纏的臨界溫度隨著量子位數的增加而升高；偶量子位系統在鐵磁區和反鐵磁區均存在對糾纏，而且糾纏的臨界溫度隨著位數的增加而降低。In this paper point to point control, constant frequency control and up and down frequency control are studied, in which current lagging loop control method is used to restrict over currents. and using flux tracking method, position open loop, position close loop control system are also studied. and research results indicate that larger current ripples are restricted by means of subdividing space vectors
本文以永磁同步電動機為研究對象，分別對同步電動機的點動控制、恆頻控制以及升降頻控制進行了分析與研究，研究中採用了電流滯環控制方法，可有效地限制過電流現象；此外採用磁鏈跟蹤法對位置開環和位置閉環的步進控制系統分別進行了探討與研究，研究表明，採用矢量細分后，可有效地減小電流波動。Abstract : the original mineral of dading iron mine was processed by the technique which included pre - classification, dry magnetic separation to discard dirt, magnetic separation of the coarsely ground ore, scondary grinding and secondary magntic separation of the rougher concentrate, thus raising the processing quantity of the crude ore, reducing the grinding cost, with the grade of iron concentrate 65. 54 %, the recovery of iron 94. 11 %
文摘:採用預先分級、乾式磁選拋廢、粗磨磁選、粗精礦再磨再磁選的工藝流程處理大頂鐵礦原生礦，提高了原礦處理量，降低了磨礦成本，獲得鐵精礦品位65 . 54 、鐵回收率94 . 11的技術指標Since removable optical discs and tapes are less expensive per megabyte ( mb ) than hard disks, removable storage and remote storage can decrease your costs
由於可移動的光盤和磁盤在每兆位元組（ mb ）上比硬盤廉價，因此可移動存儲和遠程存儲就大大降低了成本。Polydispersed a - fe nanoparticles have been obtained by using bi - amine terminated polyurethane flexible macromolecule as a surfactant, and on the basis of them, the epoxy - iron nanocomposite particles have been synthesized by in situ polymerization compositing technology. the real parts of both the permittivity and the permeability of the nanocomposite decrease firstly and then increse with increasing dose of surfactant. the composite particles have ideal comprehensive properties at the dosage of the sufactactant of 0. 5 g, and its frequency dispersion exceeds that of traditional micrometer carbonyl iron powders
以雙端氨基柔性大分子為表面活性劑制備了多分散的- fe粒子，並在此基礎上以原位聚合復合法制備了環氧樹脂-鐵納米復合粒子，發現隨表面活性劑用量增加，復合粒子介電常數實部和磁導率先降低后增加，在表面活性劑用量為0 . 5g時復合粒子有較好的綜合性能，頻散特性優于傳統微米羰基鐵吸收劑。According to study on magnetic parameters of the bounded ndfeb magnets : coercive force ( hc ), residual magnetism intensity ( br ), ( bh ) max. the residual magnetism intensity ( br ) and ( bh ) max of the bounded ndfeb magnets have not been evidently changed between that of cladded and non - cladded ndfeb magnetic powders
能夠改善ndfeb磁體的導電性能的目的。浙江工業大學碩士學位論文包覆前後的粘接ndfeb磁體的矯頑力有不同程度地降低;而最大磁能積和剩餘磁感應強度卻變化不大。分享友人