北天

你我是北天一颗星。

M the star in the northern sky .

隐约延伸到西侧地平线下方的暗淡光带就是北天银河。

Extending below the western horizon is the faint band of the northern Milky Way .

新疆北天山中东段地区震源参数研究

Study on Source Parameters of Earthquakes Occurred on the Middle-East Area of Northern Tianshan in Xinjiang

说明：北天的仙王座内，到处散布著星团、辉光云气、及黝黑的尘埃云。

Explanation : Star clusters , glowing nebulae and dark dust clouds abound in Cepheus , royal constellation of the northern hemisphere .

第二，详细分析了东、北、天三个方向的陀螺漂移及初始方位误差角对SINS/里程仪组合系统定位精度的影响。

Secondly , this paper dissects the influences of the drifts of gyros and the initial error of azimuth angle on the positioning precision of SINS / OD system .

我们越往北旅行，天就冷得越厉害。

As we traveled further north , the cold intensified .