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主磁场     
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  main magnetic field
     The in vivo study showed that 8 of 9 iron particles moved toward the direction of the main magnetic field,while only one tiny particle (0.2 mm×0.2 mm×0.1 mm)had no movement.
     结果:体外实验发现仅1枚最小铁屑(0.2mm×0.2mm×0.1mm)未见移动,其他8枚均见异物向主磁场方向移动。
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     A superconducting magnet for gyrotron with 4mm wave length is developed, its main magnetic field reaches 3T.
     研制了一个用于4mm回旋管的超导磁体,它的主磁场达到3T。
短句来源
     A superconducting magnet for grotron tube with 4 mm wave length is developed. Its main magnetic field reaches 3T.
     研制了一个用于4mm 回旋管的超导磁体,其主磁场达到3T.
短句来源
     The main magnetic field of Magnetic Resonace Imaging( MRI)device is simulated by using the finite element method.
     采取了二维有限元法模拟核磁共振成像(MRI)装置的主磁场
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     The energy density spectrum and secular variation of the Earth's main magnetic Field
     地球主磁场的能量密度谱及其长期变化
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  main geomagnetic field
     The variation of main geomagnetic field in China for 1990-1991 The results of the analysing data quality for the geomagnetic observatories in China
     1990—1991年中国地区主磁场变化——全国地磁台站资料质量分析结果
短句来源
     In this paper, the main geomagnetic field models in Chinese region at epochs 1950.0, 1960.0, 1970-0 and 1980.0 were derived, and the characteristics of main geomagnetic field polynomial model in local region were analysed. On the basis of the main geomagnetic field models, the geomagnetic maps for 1950.0 to 1980.0 were constructed.
     本文根据丰富的地磁资料,用泰勒多项式方法推算出1950.0、1960.0、1970.0和1980.0年中国地区的主磁场模型,绘制出各个年代地磁要素的等值线图,分析研究了局部地区地磁场泰勒多项式模型的特点.
短句来源
     The contribution to the main geomagnetic field from high-degree harmonics of IGRF models is usually neglected, since the high-degree Gauss coefficients in IGRF models are much less than low-degree ones.
     在国际参考地磁场 (IGRF)模型中 ,高阶球谐系数比低阶系数小得多 ,所以高阶项对主磁场的贡献常被忽略不计 .
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     The main geomagnetic field,B,and its secular variation,,originate from same dynamo process in the outer core.
     地球主磁场B和它的长期变化. B都起源于地球外核的磁流体发电机过程,但是,它们的空间结构和时间演化特征却有很大差异.
短句来源
  main field
     After optimization of design,including increasing the thickness of septum to 15 mm and adding a shielding hat with radius of 200 mm and thickness of 10 mm,the ratios of transverse stray field to main field were 0.8‰(in y direction) and 0.36‰(in x direction). The results were satisfactory to the requirement of RCS beam dynamics.
     通过对不同的磁铁设计方案进行3维模拟计算和优化发现,采用15 mm厚的切割板以及在屏蔽管出口处添加半径为200 mm、厚度为10mm屏蔽帽的磁场屏蔽措施,将Lambertson型切割磁铁的横向漏场降低到主磁场的0.80‰(y方向)和0.36‰(x方向),可以满足CSNS/RCS环的束流动力学设计要求。
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     Magnetic field at the axis of its main field coil has reached 2.14 T. Length of uniform region is 14.5cm Degree of uniformity is +3.84%. It could be operated in persistent mode by means of superconducting switch.
     它的主磁场线圈中心轴磁场达到2.14T,均匀区长度为14.5cm,均匀度±3.84‰,利用超导开关可以闭环运行。
短句来源
     Based on the data of the Bloxham & Jackson Geomagnetic model(BJ for short) and the International Geomagnetic Reference Field(IGRF),the features of the geomagnetic main field periodicity are discussed.
     利用BJ模型和国际地磁参考场(IGRF)模型资料,研究了地球主磁场的周期特点.
短句来源
     Saddle shaped coil is often used in MRI where the direction of main field ishorizontal,due to its simple structure and field perpendicular to its axis.
     鞍形线圈结构简单,能产生方向与其轴线相垂直的磁场,常用于主磁场方向为水平方向的MRI系统中。
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     Using a home made microimage system, we studied the susceptibility effect in magnetic resonance image of a model sample under 7 T main field.
     利用自制的微成象系统,在7T的主磁场下,测量了模型样品的核磁共振图象中磁化率引起的失真。
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  main-flux
     A computer model of a saturated Induction machine is introduced which takes into account the effect of main-flux saturation.
     本文介绍了一个计及气隙主磁场饱和效应的感应电机的计算机仿真模型。
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      main magnetic field
    Space-time modeling of the main magnetic field by combined methods of spherical harmonic analysis and natural orthogonal compone
          
    A simple method for obtaining a space-time model of the main magnetic field from the high-precision satellite survey data is described.
          
    The images were obtained at various angles of the patellar cartilage in relation to the main magnetic field (0, 55, 90 °).
          
    We found a strong effect of cartilage rotation in the main magnetic field, too.
          
    The spin-echo procedure is the basic technique in a magnetic resonance (MR) study (the magnetization vector is flipped by 90° onto the ortogonal plane to the main magnetic field).
          
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      main geomagnetic field
    Global anomalies of the main geomagnetic field and the dynamic model of their sources
          
    The model of the main geomagnetic field sources, including 12 more dipoles in addition to the main dipole, is presented.
          
    This made it possible to substantially smooth the time variations in the dipole parameters obtained previously and, on the other hand, to describe all global anomalies of the main geomagnetic field using this model.
          
    The continuous spatial-temporal model of variations in the main geomagnetic field in the 20th century has been elaborated.
          
    Motion of the north magnetic pole within the scope of the dynamic model of the main geomagnetic field sources
          
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      main field
    No GRB fell within the main field of view; they were all recorded by the "secondary optics" of the telescope.
          
    At the same time, the observed rapid northward motion of the pole is related to the time variations in the parameters of 12 sources approximating the so-called nondipole part of the main field.
          
    These adsorbents can therefore be used in gas-solid chromatography even for the elution of polar compounds, though gas-liquid-solid chromatography is the main field of application.
          
    I discuss the status of one of these "four Why questions", that of function or survival value, and the relationship of Tinbergen's ethology to behavioural ecology, the main field asking functional questions about animal behaviour today.
          
    Organic pollutant removal is the main field of water photocatalytic decontamination.
          
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