main geomagnetic field是什么意思

网络释义

用法例句

Modeling the main geomagnetic field is a kind of all-around research work,concerning with the research on the main geomagnetic filed theory,magnetic survey,data reduction,model expression,and model interpretation and application.

主磁场建模是一项综合性的研究工作,它涉及主磁场理论、磁场测量、数据同化、模型表达、模型解释以及模型运用等多方面的研究。

The energy density spectrum and secular variation of the Earth s main magnetic field on the surface of the earth during 1690～2000 were calculated and analyzed according to the models of Jeremy Bloxham and Andrew Jackson and the eighth generation of International Geomagnetic Reference Field(IGRF).

根据BJ地磁场模型和第 8代国际地磁参考场 (IGRF)模型 ,计算并分析了 16 90～ 2 0 0 0年期间地球表面主磁场和分量的能量密度谱及其长期变化 。

Study on the Magnetic Field Security of MRI and Its Influence on fMRI

MRI主磁场的安全性及其对fMRI的影响

During a reversal, the main field weakens, almost vanishes, then reappears with opposite polarity.

在逆转期间，主磁场减弱，几乎为零，然后以相反的磁极重新出现。

Study of Shimming Method Based on the Central Magnetic Field for MRI Permanent Main Magnet

基于中心磁场参照的MRI永磁主磁体匀场方法研究

The electromagnetic intensity, the acting time and the heat effect are the main factors which influence the separating result.

磁场强度及作用时间及磁场的热效应是影响分离效果的主要因素。

rotating-field electromagnetic pump

旋转(磁)场电磁泵

Regional Geomagnetic Field Modeling Methods and Their Applications in Constructions of Reference Maps for Geomagnetic Navigation

区域地磁场建模主要方法及其在地磁导航基准图构建中的应用

This chapter provides the main background for the electromagnetic theory used in this book.

本章阐述本书所用的电磁场理论的主要基

Direct Field Oriented Control Strategy Used in Traction Inverter

直接磁场定向控制在主变流器中的应用

The force exerted by a magnetic field.

磁力由磁场施加的力

The electric and magnetic fields have been amalgamated into electromagnetic field tensor.

电场和磁场合并为电磁场张景。

What is more, the primary geomagnetic field has lessened by nearly 10 percent since it was first measured in the 1830s.

此外，地球的主要磁场自1830年首次测量至今，已经减弱了将近10％。

The magnitude of magnetic field in the z direction is the main reason for the fluctuating of the dust density distribution.

磁场大小是导致尘埃粒子密度分布波动的主要原因。

AIM:To observe the effect of different intensity constant magnetic field(CMF) on proliferation of rat aorta endothelial cells(RAEC).

目的:观察不同强度恒磁场对大鼠主动脉内皮细胞增殖的影响。

The Control Effect of Bacillus Subtilis by Magnetic Field on Postharvest Fruits Disease;

枯草芽孢杆菌磁场诱变株对采后主要果实病害的控制效果研究

Properties of Negatively Charged Donors in Parabolic Quantum Well Wires under Magnetic Fields;

磁场作用下抛物势量子线中负施主杂质离子体系的性质

Experimental Investigation on Periodical Temperature Field in Active Magnetic Regenerator of Rotary Magnetic Refrigerator

旋转式磁制冷机主动式回热器周期性温度场试验

Value of low-field magnetic resonance imaging in diagnosis aortic dissection aneurysm

低场磁共振成像对主动脉夹层动脉瘤的诊断价值

a magnet that retains its magnetism after being removed from a magnetic field.

从磁场中移走后仍保持磁力的磁体。