作业帮英文翻译The surface of the earth is surrounded by a weak magneti
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英文翻译
The surface of the earth is surrounded by a weak magnetic field which culminates in two internal magnetic poles situated near the North and South true or geographic poles.That this is so is obvious from the fact that a magnet freely suspended at various parts of the earth's surface will be found to settle in a definite direction,which varies with locality.A plane passing through the magnet and the centre of the earth would trace out on the earth's surface an imaginary line called the magnetic meridian as shown in Fig.3.1
The surface of the earth is surrounded by a weak magnetic field which culminates in two internal magnetic poles situated near the North and South true or geographic poles.That this is so is obvious from the fact that a magnet freely suspended at various parts of the earth's surface will be found to settle in a definite direction,which varies with locality.A plane passing through the magnet and the centre of the earth would trace out on the earth's surface an imaginary line called the magnetic meridian as shown in Fig.3.1
地球的表面被一个微弱的磁场环绕,这个磁场强度在两磁极处达到顶点,这两个磁极就位于地球的正北正南极或称地极.很明显,事实也如此,从磁铁能自由悬浮于地球表面的不同位置的事实,可以很容易确定具体的方向,只是随地点的不同而变化.一架从地球正中磁场穿过的飞机可以描绘出一条想象的线,这条线称为磁子午线,如图3.1 所示.
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