氣態包層 的英文怎麼說
中文拼音 [qìtàibāocéng]
氣態包層
英文
gaseous envelope-
Based on field research and the dynamic analysis of remote sensing data of different time ( 1987 tm, 1996 tm and 2000 china - brazil earth resource satellite ccd ), using multi - information of research area ( including data of geology, geography, hydrology, meteorology, economy, human culture and dem ) and existing research results, the dissertation discusses drive factors of desertification and the relationships between drive factors and desertification with the help of gis tool and some mathematical methods such as probability, statistics, curvilinear estimation, logical analysis and analytic hierarchy process
論文在對研究區土地荒漠化現狀野外調研和不同時相（ 1987tm 、 1996tm和2000ccd ）遙感圖像土地荒漠化信息提取和演變分析的基礎上，結合研究區已有的多元信息基礎資料及研究成果（包括地質、地理、多時期的水文氣象、經濟、人文以及dem數據等） ，運用gis強大的空間分析功能和概率統計、曲線估計、邏輯分析、主成分分析、層次分析等數學方法綜合研究了土地荒漠化與各驅動因子之間的相關關系，揭示了研究區土地荒漠化的主要驅動因素，探討了荒漠化動態演化規律。Two of liquid metal materials, i. e. liquid metal pb - 17li and li, are seriously considered for their physical and chemical properties. liquid metal pb - 17li is one of the most attractive candidates for using as breeder, neutron multiplicator and coolant in dual - cooled waste transmutation blanket of fds
分析了有關液態金屬材料的物理化學特性，經過綜合慎重考慮和研究，選取液態金屬pb - 17li作為氚增殖劑和中子倍增材料，同時也作為冷卻劑和氦氣在包層中分離冷卻。The silica coated nanometer particles after containning in n2 for 2h within 600 c is the crystallization form. thus it can sufficiently work the nano effect. the surface of the composite particles has no crystal water and no absorbing water. the anti - oxidation ability increase after coating
鐵納米復合粒子為結晶態，納米粒子在6000c ，氮氣保護下，納米粒子不重新結晶，殼層二氧化硅包裹在納米鐵表面阻斷了納米粒子之間的重新原子排列。Linear induction motor is an important kind of machines which have some merits such as simple structure, low cost, durability, convenience for maintenance etc. the subject of this thesis is to study a big circular ring linear induction motor, and the major works in this thesis are summarized as follows : ( 1 ) considering the effects of the finite length of primary core, one - dimension analytical solution for the air gap field is cited in this paper. based on it, the single layer winding magnetic field is studied. considering whole - pitched and short - pitched winding configuration with odd poles and half - fulled slots in both ends, the double - layer winding magnetic field is analyzed, respectively
本文對大圓環直線感應電機進行了深入細致研究，內容包括： （ 1 ）本文採用有限長行波面電流作用於有限長鐵芯上的模型，引用了氣隙磁場一維解，研究了單層繞組磁場，奇數極半填槽雙層繞組在採用整距和短距時磁場的分析、比較，簡單介紹了二維解； （ 2 ）用有限元軟體ansoft對大圓環直線感應電機空載氣隙磁場進行了靜態分析，並分析了結果； （ 3 ）用軟體進行了額定電壓下的瞬態分析，得到了轉矩，位移，轉速隨時間變化曲線圖，利用單極性霍爾元件測定轉速並與軟體計算結果進行了比較，採用等效電路法計算了堵轉時的最大電磁力並做實驗進行了驗證，由實驗測得了三相電流波形，並與計算結果進行了比較，對其不對稱性進行了定性分析。The subject of this thesis is to study ironless moving coil linear permanent magnet synchronous motor and the major works in this thesis are summarized as follows : 1 ) two analytical formulas are derived by concentrated current method and distributed current method to determine the magnetic field due to pm, based on the current model of pm. besides, two method ( magnetic charge method and solution by laplace equation method ) are also introduced with comparing their advantages and disadvantages. then the effects of the motor parameters on the flux distribution are discussed
本文對空芯動圈式直線同步電動機進行了深入細致的研究，內容包括： （ 1 ）採用電流模型推導出兩種計算永磁磁極二維氣隙磁場的解析公式（集中電流法、分佈電流法） ，同時介紹了兩種永磁電機氣隙磁場計算方法（磁荷法，直接求解拉氏方程法） ，分析各種方法的優缺點，討論電機參數對氣隙磁密的影響； （ 2 ）介紹了單層同心繞組的布置方式，根據安培定律推導出空芯動圈式直線永磁同步電動機的靜推力計算公式，分析靜態力?位移特性； （ 3 ）建立空芯動圈式直線永磁同步電動機動態模擬模型，模擬不同驅動方式下電動機起動、穩態運行時電磁力、速度、位移的變化情況。Pressure fluctuation time series in gas - solid fluidized beds contain many dynamic information, such as particle characteristics, operating conditions, bubble behavior. in the paper, nonlinear analysis is adopted and implemented so as to understand the fluidization from a new viewpoint in depth
氣固流化床壓力脈動時間序列包含了床層運動的許多動態行為信息，包括顆粒特性、操作條件，氣泡行為等，文中應用多種非線性方法來對其進行研究，以期能從新的角度來更深入地認識流態化規律。分享友人