地极

地极的长周期摆动

The Long Period Oscillation of the Terrestrial Pole

最神奇的是，她的音乐具有成熟却又很奇怪地极富可塑性

Intriguingly , she gave to the music a developed although oddly malleable personality .

一种快速切除HVDC输电系统接地极线路接地故障的方案

A Proposal for Fast Tripping Grounding Electrode Line Fault of HVDC

应用肌电图技术测试其健侧肢体正中神经的F波参数，连接记录电极（姆短展肌肌腹）、参考电极（第一指骨）与地极。

Recording electrode ( muscle belly of abductor pollicis brevis ) and reference electrode ( first bone of fingers ) were connected with earth pole .

Atlas产品有意地极大利用现有的开源组件，进一步详细描述其功能。

The Atlas product was developed to intentionally heavily leverage existing open source components to further elaborate its functionality .

NAO与地极运动的十年尺度变化

Variations in Nao and polar motion on decadal time scale

1949.0至1979.0ILS地极坐标的均匀化

Uniformity of The ILS Coordinates of Pole from 1949 . 0 to 1979 . 0

±800kV直流接地极对交流电网的影响范围

Influence Scope of AC Network by DC Grounding Electrode Rated ± 800 kV

±800kV圆环接地极电流场温度场耦合计算

Coupling Calculation of Current Field and Temperature Field of ± 800kV Cirque DC Grounding-Electrode

提出了基于Chirp-Z变换的移变双基地极坐标格式算法。

We also proposed an translate variant Bi-SAR imaging polar format algorithm based on Chirp-Z transform .

本文介绍了切削Al2O3强化木地极的加工特点，研究了金刚石刀具的结构、切削刃材料、几何角度及切削参数等。

This paper introduced the machining properties of PCD tool in cutting out Al2O3 laminated flooring , and made a study on the configuration of tools , the material 0f cutting edge , the engagement angle of the tools and the machining parameters .

1962&1986年JYD（1968.0）地极坐标的均匀化及其与BIH的比较

A homogeneous series of jyd_ ( 1968.0 ) pole coordinate system from 1962 to 1986 and the comparison between the series and BIH

介绍了PCM系统的工作原理，对检测过程中信号点的选择、地极的选择、信号的衰减与破损点面积的关系等问题进行了研究，提出了注意事项，以提高检测评估的准确率。

Introduced the working principle of PCM , and studied the signal point selection , earth selection , the relation between signal attenuation and disrepair area and so on . In order to make inspection more correctly , put forward something to pay attention .

本文比较了1962.0&1979.0期间ILS和BIH的地极座标，求出了ILS的极原点及其纬度观测站对于BIH系统在此期间的长期漂移，结果表明ILS系统的极原点对于BIH系统存在约0。

In this paper the ILS and BIH polar coordinates in the period from 1962.0 to 1979.0 are compared , and the secular drifts of ILS origin and ILS stations with respect to the BIH system in this period are derived .

1984年开始，天文计算中采用FK5基本星表和新天文常数，这些变动直接影响了经典光学仪器观测确定的地极坐标。

The FK5 fundamental catalogue and the new astronomical constants have been used in the astronomical calculation since 1984 . These changes will directly effect the results of the polar coordinates with classical optical instruments .

为了提高卫星地面坐标计算精度，给出地球自转改正、地极移动、SLR系统时延、大气折射、卫星质心改正和跟踪望远镜各项动态系统差修正公式。

To improve the accuracy for computing the satellite topocentric coordinates , the formulae to modify the Earth rotation , polar motion , SLR system time-delay , atmosphere refraction , the satellite mass-center correction , various dynamic systematic errors of the SLR tracking telescope are given .

地极周年运动和自由摆动的主要特征

Main characteristics of annular motion and free wobble of earth pole

纬度变化和地极运动

VARIATION OF LATITUDE AND POLAR MOTION Exercise and change of leukocyte

磁极离它们的地极很遥远。

The magnetic poles are quite distant from their geographic counterparts .

直流输电接地极附近地下金属管道电流的分析

Analysis of Current on Underground Metallic Pipeline Near HVDC Ground Electrode

（在红色尘暴发生时，）距地极转换发生的时间不会超过几个小时了。

The shift cannot be more than a few hours away .

直流输电工程接地极土壤热特性测试

Soil Heat Characteristic Test of Grounding System in Dc Transmission Line

阐述了直流输电系统中接地极的原理、构成和技术要求；

The principle , constitution and technical requirement of earth-pole were expounded .

直流接地极电流对中性点直接接地变压器影响

The Influence of Current of DC Earthing Electrode on Directly Grounded Transformer

直流输电接地极对地表电位分布的影响

Analysis of Effects of DC Earthed Pole on Earth Surface Potential Distributions

利用可变长度资料外推地极坐标的方法

A process of extrapolation of polar coordinates with data in changeable length

深埋垂直接地极的分流计算

The Calculation of Branch Current Among the Deeply Buried Vertical Grounding Poles

接地极电流分布的一种简化计算方法

Simplified Method for Calculation of Current Distribution on Grounding Electrodes

直线型直流接地极附近三维电流场边界元法计算

3D Current Field Computation Around Linear-Type HVDC Ground Electrodes with BEM Method

云广与贵广Ⅱ回直流输电系统共用接地极设计

Common Grounding Electrode Design for Yunnan-Guangdong and Guizhou-Guangdong ⅱ DC Transmission Project