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我们人类已能驾驶宇宙飞船作宇宙旅行,可说是上天有术了,但当今的科学技术还没能使人类入地有门。然而,虽然人类不能直接看到地球的内部构造,但这并没有防碍科学家们对我们人类居住的这个行星(地球)进行研究、了解它内部构造的热切追求。光学目前还不能帮助我们研究地球内部构造,因为一般的光穿透力太小,穿透力很强的x射线也无济
We humans have been able to travel the spacecraft for space travel. It can be said that there is an operation in heaven, but today’s science and technology have not yet enabled mankind to enter the world. However, while humans can not directly see the internal structure of the Earth, this does not prevent scientists from studying the planet (Earth) where we live and understanding the fervent pursuit of its internal structure. Optics is not yet able to help us to study the Earth’s interior structure, because the general light penetration is too small, strong penetrating X-ray is also no help