1·We also show how to get a local orientation and an approximate formula for geomagnetic declination. Our work clarifies the misconception about polarized wave of antenna.
给出当地方向的确定方法和地磁偏角的近似计算式，澄清了接收天线极化波容易造成的误解。
2·The magnetic declination of palaeomagnetic mean directions of the Bohemian Massif and that of Inner Sudetie Basin of Late Carboniferous Epoc differed 17 degrees.
波希米亚地块与内苏台德盆地地区晚石炭纪古地磁平均方向的磁偏角相差17度。
3·The article is a discussion for calculation method of base-line values of declination in Lhasa Geomagnetic Observatory and has some results.
通过对拉萨地磁台磁偏角基线值计算方法进行讨论，得到了有益的结果。
4·The horizontal gradient of the declination (D) varies not only with latitude, but also with longitude.
磁偏角（D）的水平梯度不仅随纬度变化，而且随经度变化。
1·System directly calculate any point at a given moment in the sun elevation Angle, solar azimuth, solar declination Angle, the day of sunshine, year round sunshine and average annual sunshine time.
系统直接计算出任意一点在给定时刻的太阳高度角、太阳方位角、太阳赤纬角、当天日照时间、全年日照时间以及年平均日照时间等。