no-precursory anomaly 非前兆异常
Whatever Bo's motives were, the deeper problem is that Chongqing was no anomaly.
不管薄的动机是什么,更为深层的问题是重庆不是例外情况。
The high resistivity layer shall not be infinitely great or close to surface, otherwise the layer will prevent the current entering the anomaly body and no anomaly will be produced.
而当高阻屏蔽层在平面上趋于无限大而且埋深较大时,这时因进入异常体的电流很小,甚至趋于零,所以地面上观测不到异常体产生的磁异常。
This iridium anomaly offers strong support for the Alvarez hypothesis even though no asteroid itself has ever been discovered.
这一铱异常为阿尔瓦雷斯假说提供了强有力的支持,尽管小行星本身从未被发现。
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